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Mastering the CDL Pre-Trip Inspection Exam: A Complete Guide

Learn how to conduct thorough pre-trip inspections with our guide, a critical component for commercial vehicle safety.

Written by Andrei Zakhareuski. With over 16 years of expertise, Andrei leads Driving-Tests.org, a top online resource for driver education. His leadership has established vital partnerships with over 2,600 libraries, educational bodies, and state agencies.

The CDL Pre-Trip Inspection Exam is an integral part of obtaining your commercial driver’s license. This guide covers Class A and Class B pre-trip inspections, provides a checklist, and offers tips for memorizing the inspection process.

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​ CDL Class A Pre-Trip Inspection

Engine Compartment Inspection

Includes checking for leaks, belt tension, and the condition of hoses, among other components.

Cab Check/Engine Start

Involves inspecting the cab’s interior, gauges, and starting the engine to check for abnormalities.

Brake Check

Focuses on air brake systems, including air brake checks and the parking brake test.

​ CDL Class B Pre-Trip Inspection

Vehicle Overview

Begin with a general overview of the vehicle, checking for obvious signs of damage or issues.

External Inspection

Inspect all external components, including tires, lights, and mirrors.

Internal Inspection

Check all internal controls, ensuring everything is functional and within reach.

​ Pre-Trip Inspection Checklist

• Lights and reflector s: Ensure all are clean and functional.
• Engine oil and coolant levels : Check for adequate levels.
• Steering mechanism : Ensure it’s secure and functioning.
• Horn : Test for functionality.
• Windshield wipers : Check for operability and condition.
• Mirror s: Adjust for optimal visibility.
• Emergency equipment : Ensure presence and accessibility.
• Air brake system : Test for leaks and proper pressure.

​ Tips for Memorizing the Pre-Trip Inspection for CDL

• Create a Routine : Develop a consistent order in which to conduct your inspection.
• Use Mnemonics : Create acronyms or phrases to help remember the steps.
• Practice Regularly : Hands-on practice is the most effective way to memorize the inspection process.
• Visual Aids : Use diagrams or checklists as visual reminders.

Pro Tip : Practice the pre-trip inspection in a real-world setting. The more you perform the inspection in a practical environment, the more natural it will become.

Remember, the pre-trip inspection is not just a test requirement – it’s a fundamental safety practice every commercial driver should master. For more resources and detailed guides, visit Driving-Tests.org .

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• Start a free Pre-Trip Inspection practice test:
• CDL Class A Pre-Trip Inspection
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• Pre-Trip Inspection Checklist
• Tips for Memorizing the Pre-Trip Inspection for CDL

CDL Pre-Trip Inspection Practice Test

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The pre-trip inspection test is neither an endorsement test nor a written test … but it is an essential part of the commercial driver’s license testing process.

The pre-trip vehicle inspection test is basically a skills test that is designed to determine if a driver can identify which features and equipment on a test vehicle should be inspected before operating the vehicle.

The test can cover a wide variety of equipment located both inside and outside of a truck. For example, the test could cover hoses and belts, specific parts of the engine, oil level, mirrors and windshield and much more. We’ll discuss in more detail what is covered on the test later in this guide.

Right now, let’s proceed on and take a close look at the test itself and the testing process.

Test Overview

The purpose of the vehicle inspection test is to both determine if a vehicle is safe to operate and to determine if a driver knows how to ensure his or her vehicle is safe to operate.

During the vehicle inspection test, the driver is expected to explain or show their knowledge of the vehicle inspection process. That means the driver will have to walk around the vehicle and point to or touch each item and explain to the examiner what they are checking and why.

If you do not pass this test, any other endorsement tests that you have scheduled will be canceled.

Before you go to the DMV to this and other endorsement exams, you should visit your state’s DMV website and find the following:

Age requirement for taking the test – most states require applicants to be 18 years of age with a valid driver’s license. If the driver is going to be driving from state to state, most states require that they be 21 years of age with a valid driver’s license.

Identification documents that most be produced to prove your identity. Sample documents that acceptable often include a birth certificate and a valid driver’s license.  

Fees that will be due before taking the test. Also, as part of this step, be sure to check what payment methods are accepted at the DMV office you will be visiting.

What’s on the Test?

You will be required to conduct both an internal and external inspection of the test vehicle.

That means on the internal inspection you will have to identify and check such things as: engine hoses, engine belts, oil pressure, coolant level, power steering fluid, mirrors and windshield, safety equipment, temperature gauge, air gauge and more.

On the external inspection you will need to identify and check such things as: steering box, hoses and linkage, air brakes, suspension, wheels, tires, doors, splash guards and more.

During the test, the driver will NOT have to crawl under the hood or under the vehicle. The brake lights, emergency flashers, turn signals, and horn must be checked and if any of these items do not work, the skills and road portions of the test process will immediately be postponed.

One more thing, when taking the inspection test you may be able to use the guides shown in your commercial driver’s license handbook but you cannot have any instructions or notes written on them.

Here are some sample questions that you will need to be able to answer when conducting the pre-trip inspection:

• How much play is allowed in engine compartment belts?
• What might puddles on the ground or dripping fluids on the underside of the engine and transmission indicate?
• How should you go about checking the engine coolant level?
• When checking the wheels, what might rust around a nut indicate?
• How do you check the power steering fluid?

How to Prepare for the Test

We recommend a three step approach to preparing for this test.

Step One – study your commercial driver’s license handbook, paying particular attention to the pre-trip inspection section. Read this section multiple times and try to commit everything to memory.

Step Two – Take pre-trip inspection practice tests to asses and further increase your understanding of this topic. We offer pre-trip inspection practice tests right here .

Step Three – Take what you’ve learned and apply it to a real world truck. It’s one thing to see something in print but you should also look at a physical truck so that you know where essential components are and you can identify them.

Test Taking Tips – Improve Your Chances to Pass

Things you can do to improve your chances of passing this test include getting a good night’s rest the night before the exam.

You should also eat well before the test. This will ensure your mind and body have fuel needed to successfully execute the inspection.

Still more things that you can do include taking some deep breaths to relax yourself before beginning the test. You should also be very familiar with where the DMV is located and how to get there. Then you should plan on leaving early so that you will have to compose yourself before the test and you won’t feel rushed and stressed when you begin.

We also recommend scheduling an appointment at the DMV to avoid any long wait that can make you feel tired and stressed and negatively impact your test performance.

The pre-trip inspection test is a very important test because failing to pass this test will prevent you from being able to move an take scheduled endorsement exams.

This is done for a reason – because being able to identify that a truck is safe to operate is something that is critical for drivers to know how to do. Failure to master this skill can put lives at risk on the roadways.

So don’t take this test for granted. Study the handbook, take practice tests and be sure to practice inspections on real trucks to further expand your knowledge. Do these things and you’ll pass this test with flying colors and be able to move on to receiving the endorsements you covet.

CDL Pre-Trip Inspection Test and How To Memorize It

The pre-trip is one of the things that students fear the most and fail the most. Let’s face it, the pre-trip is intimidating because there is so much stuff to memorize. The key to learning the pre-trip inspection is preparation, memorization, and repetition. Don’t go away, in this article I have exactly what you need to make sure you pass it the first time.

It is going to take time for you to memorize everything and the only way to do this is by repeating it over and over.

Hopefully, the school where you are being trained is giving you enough time to practice it everyday you are there.

I can’t stress that enough, regardless of which method you use below you need to repeat it daily and practice on your own.

Don’t expect that your run through once a day with your instructor is enough, it isn’t.

In this article I’m going to give you 8 tips that will help you memorize the pre-trip so you are able to pass it your first time and move on with your driving career.

1. REPETITION!

The only way to memorize the pre-trip is to repeat it over and over. Start with the engine area and work your way around the truck and finally inside the cab.

There is no way around consistent repetition. The more you do it the more you will memorize it. It’s just that simple.

Now that we have established how important repetition is I want you go through the rest of this list and figure out which method (or methods) works best for you and then repeat it over and over.

2. Record Someone Else

You can use YouTube to find a video of someone doing a pretrip and for the most part they work pretty well (more about YouTube later).

Take it a step further though. Ask someone (like and instructor or friend) to do a pre-trip and video record them.

While they are doing it try to use the zoom function on your camera so that you know what the parts look like and what is being checked.

Students that I come across have said that this method works really well because you have quality video and audio. Just watch your recording over and over and this stuff will be engraved in your brain.

Just make sure you are absolutely sure that the person you record knows what they are doing and are showing you everything. You don’t want to watch a video that skips anything that will be on the test.

3. Smaller Chunks

Break down the pre-trip into smaller chunks so that it is not overwhelming. If you think about memorizing everything at once it will be a daunting task.

My suggestion is you learn your air brakes first, then the inside of the cab, the engine compartment, and then the rest of the truck. You can chose any order that you want to as long as it helps you out.

Memorize each part and then tie it all together. You will find that learning the pre-trip is much easier if you do it this way.

4. Use Your Imagination

Do this while in bed before you fall asleep. Warning: the pre-trip is going to consume a lot of your attention during training, even while you sleep!

When you wake up go through a video you found on YouTube or the one you recorded (see #2) and correct any errors you made.

5. Find A Truck

It really helps if you have access to a truck. Pictures alone are not enough. Most of you are probably getting your training through a private school, company sponsored training , or community college.

All of these will give you access to an actual truck and should be taking time each day to practice the pre-trip.

Take advantage of this time with the truck to practice your pre-trip as much as possible. When class ends try to stick around to get in some extra practice, this could be the difference between passing and failing.

6. Watch A Pre-Trip Video On YouTube (not straight through)

There are a lot of videos on YouTube that you can choose from. Let me save you some time, these two (below) is the best because it has good audio and video quality, is accurate, and is easy to follow.

Don’t watch the video straight through over and over. Like I mentioned earlier you should chunk it into smaller sections.

Watch a section, pause it, and list off the names of the parts and things to look for. Play it again to see if you are getting them correct. When you finish one section go on to another section until you finish it.

Don’t move on to a new section until you have memorized the section you started. When you complete all the sections you should be able to watch the whole pre-trip and repeat everything on it from start to finish.

If you want to challenge yourself a little try mixing up the sections so that the sections that was last is now first. This will let you know if you are really memorizing everything.

7. Use A Checklist

Probably the most popular ways to memorize the pre-trip is to use a checklist. No doubt that wherever you are getting your training at is already giving you a checklist to use.

Use it. A lot.

Not all checklists are done in the same order but they should all cover the same stuff. I like this one here (printable PDF document) by the people at Trucking Truth , it’s easy to follow and is accurate.

Every possible thing that you will need to identify during the pre-trip is on this checklist.

8. Use Pictures/Diagrams

There are a ton of picture resources out there that will help you memorize the test. Just do a search for “cdl pre-trip inspection pictures” and you will find a ton of stuff.

The picture I like most are these (link to PDF) by Driver Solutions. The pictures are easy to see and distinct arrows are used to point to each part. Along with pictures is an explanation of what to look for and what to say for each individual part.

What Is The Pre-Trip Inspection?

The pre-trip inspection is an inspection of the commercial vehicle including the cab, engine compartment, and exterior.

A driver of a commercial vehicle is required, by federal law, to complete one every day before driving the vehicle and at least once in a 24 hour period. Every single time you begin driving your truck you will have to complete a pre-trip.

The purpose of it is to make sure that the vehicle is safe to drive.

This gives you a chance to get whatever is wrong fixed. If you miss something and are inspected it could result in citations by the DOT.

A lot of drivers find it to be a pain in the rear but you really need to do it every single time you drive your truck. Don’t listen to the irresponsible driver at the truck stop that tells you it’s okay to skip it. It’s not okay.

How Long Does An Inspection Take?

A pre-trip usually takes about 15-45 minutes to complete. It really depends on the type of truck you are inspecting and your experience.

After several years of driving it’s inevitable that your pre-trip is going to be quicker because you are better at doing it and you know what to look for.

As a new driver you should take your time and make sure you do it right. Make it a habit to always conduct a thorough inspection so that you run into less problems while on the road.

What To Say During The Pre-Trip Test

Knowing what to say is important during the test. There are some specific language the person testing you is going to be listening for. More than likely you already heard these phrases but here is an easy way to remember what to say:

PMS— Properly Mounted, Secure ABC— Abrasions, Bulges, Cuts CBB— Cracked, Bent, Broken

There are some tricks that you can use to make sure you say the right thing, here they are: 1 . If its mounted (almost everything is) use the words, “Properly Mounted, Secure” (PMS) 2. If its rubber use the words, “Abrasions, Bulges, Cuts” (ABC) 3. If it’s metal or another hard surface use the words, “Cracked, Bent, Broken” (CBB) 4. If it has fluid or air going through it or in it remember to say, “Not Leaking”

This language shouldn’t be new to you, hopefully the school that is training you has already taught you this stuff.

What Should You Cover During The Pre-Trip?

The areas that you should cover include the coupling system, light check, in-cab inspection, engine compartment, trailer, and drivers door fuel area. Make sure that you are prepared for all of these.

Also, keep in mind that CDL schools/classes may cover the pre-trip in different orders. It’s okay though, they all cover the same stuff. The order that you practice is probably going to be different from someones in a different school/class.

There is no correct order as long as you memorize everything.

What Will Be Tested On The Actual State Pre-trip Inspection Test?

You will be required to perform a pre-trip for the light check, the in-cab inspection, and the coupling system. These 3 areas you have to complete.

After completing those 3 areas your examiner will have you perform one of the following: the engine compartment, trailer, drivers door fuel door, or the entire vehicle.

You will not know ahead of time which one the examiner will choose. This is why it is crucial that you know all the areas.

What Else You Can Do To Prepare?

Aside from the ways listed above to help you memorize the pre-trip there are some other things you can do.

One thing you can do is try answering some practice tests like these here from Trucking Truth. There are 5 free practice tests you can take.

I really find that these practice tests reinforce what you need to know for the real test. It’s worth your time try them out just to see how you do.

What If You Fail The Pre-Trip?

If you do fail the pre-trip you are able to retake it. Make sure you know why you failed the test, ask the inspector if he/she can specifically tell you what you did wrong.

This is usually never a problem because the inspectors want you to know what you missed so that you can pass the test the next time.

One more thing, don’t be embarrassed because you didn’t pass it on your first try! This happens to a lot of people! You are not the only person that will fail the pre-trip and you won’t be the last.

Study what it is that you missed/did wrong and pass it on your second attempt.

Extra Tips For Passing The Pre-Trip Test

Probably the most common reason people fail the pre-trip is because they are nervous.

The two things that will help you out the most is to always remember that the pre-trip is a verbal contact test.

As you start walking towards the vehicle you should already be looking for any leaks under it, broken marker lights, loose mirror brakes and anything else that seems out of place.

BE VERBAL! Your number one priority is to make sure the examiner knows that you know what you are talking about. The more you talk the greater your chances are to pass the test.

Even if it might seem you are going overboard just keep going. Examiners tend to like when testers are verbal.

http://www.truthabouttrucking.com/fls/Pre_Trip_Inspection.pd

CONTACT! The second most important thing you can do is make contact with the item you are describing.  For example, as you are explaining the radiator brace you need to make sure you point to or put your hand on the brace as well.

Your examiner wants to make sure that you actually know what the item is that you are explaining.

Make sure you are pointing the the correct item though! Don’t describe the radiator brace while pointing to the turbo!

Again, make sure you are VERBAL and CONTACT every single item (correctly) that you are describing.

Now go pass that test! Good luck driver!

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Pre-Trip Inspection CDL Practice Tests

Our Free Online Pre-Trip Inspection Practice Test questions and answers will prepare you online to Prepare for the Pre-Trip portion of the CDL skills test. Each test has  3 testing modes  to help you prepare and easily remember the information.

• Download your state CDL manual and open up it up in another tab of your browser. Read it over, but you don’t need to try to memorize it!
• On this page, begin the first of our CDL practice tests in Classic Mode . See how well you do, but try not to stress out about any mistakes at this point.
• Next, switch to Practice Mode  for intense preparation, complete with instant correct answers after every question and a CDL reference. 
• When you think you’re ready, take the exam! Each Exam Mode practice test is timed and you get your grade and results only after you’ve finished each test.  This is very similar to the official state CDL written exams!

Note: For more information, see our guide on  How to Pass the Official State CDL Exams .

Choose Pre-Trip Inspection Tests Here

• Get Started Now On Pre-Trip Inspection Test 1 (Classic Mode)

Complete pre-trip inspection checklist for truck drivers

By The Schneider Guy

Estimated reading time: 4 minutes  

As a truck driver, performing a CDL pre-trip inspection is one of the most common and repeated tasks you will complete. Pre-trip inspections help truck drivers ensure their tractor and trailer are safe to operat e before hitting the road.  

Keep reading to learn what a p re -trip inspection is and what should be on a p re -trip inspection checklist .      

What is a pre-trip inspection?  

A pre-trip inspection includes checking over the tractor and trailer a truck driver will be operating . A pre-trip should be completed before the operation of a vehicle :  

• At the beginning of a driver’s shift.
• Any time a new trailer is picked up.
• After a 10-hour break.

A thorough inspection usually takes anywhere from 30 minutes to one hour and should be logged as on-duty, not driving (line 4) .

How to complete a CDL pre-trip inspection  

CDL pre-trip inspection checklist   

1. passenger-side engine:   .

• Air filter housing: Secure mounting, cover in place.
• Windshield washer fluid reservoir: No leaks, proper fluid level.
• Turbocharger: No oil or exhaust leaks.
• Engine air ductwork: No cuts, clamps secured.
• Alternator: Mounting secured, no broken or loose wire.
• Accessory drive belt: Not cracked or frayed.
• Air conditioner compressor: Secure m ounting .

2. Front brakes (covers all five brake components):   

• Brake drum: No cracks.
• Brake lining: No cracks or damage.
• Slack adjuster: Proper angle to the brake chamber, clevis and cotter pin intact.
• Brake air line: No bulges or cuts, fitting tight .
• Brake chamber: Mounting bolts secured, band clamp secured.

3. Front wheel:   

• Tire: ABCs (abrasions, bulges, cuts), pressure = 120 PSI, tread depth = 4/32 min ( DOT ) .
• Wheel: Not cracked or bent.
• Hub oil: Not leaking, at proper level – if it’s a sealed unit, can’t check level.
• Oil seal (outer): Not leaking.
• Valve cap: Not missing.
• Lug nuts: None missing, no streaks or shiny areas, none loose.

4. Driver side of engine:   

• Radiator brace: No cracks or missing bolts.
• Radiator: Not leaking, secure mounting.
• Water pump: No cracks, not loose or leaking.
• Fuel water separator/filter: Not leaking, secure mounting.
• Pitman arm/drag link: Not cracked, castle nut secured with cotter pin.
• Steering gear box: Secure to frame, not leaking.
• Power steering reservoir: Secure mounting , no leaks, proper level.
• Dipstick: Right level, secured after check.
• Steering shaft: Secure, not loose or damaged.
• Fuel pump: No cracks, not loose or damaged.
• Oil filler cap: Secure, no cracks.
• Engine coolant reservoir: No leaks, proper fluid level.

5. Steer axle suspension:   

• U-bolts: No cracks, no loose or missing nuts.
• Leak spring: No cracks, not loose or shifting.
• Tie rod: Secured with castle nuts and cotter pins.
• Shock absorber: Secure mounting, not leaking oil.
• Axle: Not cracked.

6. Rear suspension:   

• Spring mount: No cracks, secure mounting.
• Tire: ABCs (abrasions, bulges, cuts), pressure = 110 PSI, tread depth = 2/32 min ( DOT ) .
• Airbag (bellows): Fully inflated, secure mounting, not ruptured.

7. Side of cab:   

• Mirrors: Secure m ounting , no broken glass.
• Doors: No damage, glass not broken, hinges secured, opens and closes well.
• Lights and turn signals: Working, not cracked.
• Steps: Mounted, secured to skirting.
• Battery box: Secure m ounting , cover latched.
• DEF cap: Cap secured.
• Fuel cap/tank: Gasket in place, vent in place, chain secures the cap to the tank.
• Side skirting: No damage, panels secure.
• Side box: Secured, safety triangles present.
• Side of sleeper berth: No body damage.
• Sleeper berth window: No cracks.

8. Rear of cab:   

• Electrical cord: No bare wire, no corrosion, check the plug at the end of the cord.
• Air line: Not tangled or worn, rubber grommets not worn, fittings tight.
• Cab shock absorber: Secure mounting, not leaking oil.
• Cab airbag (bellows): Not ruptured, securely mounted.

9. Driveshaft/rear frame:   

• Driveshaft: Not cracked.
• Universal joint: Not cracked, not missing bolts, no shiny areas.
• Differential: Not leaking oil.
• Frame: Straight, no non-factory welds.

10. Fifth wheel area:   

• Pivot pin: Keeper pin and cotter key intact.
• Slider lock pins: Fully engaged.
• Release arm: Not bent.
• Slider rail: No broken welds or missing bolts.
• Slider stop blocks: Welds not broken, not missing bolts.
• 5th wheel platform: Well-greased, tilted down.

11. Front of trailer:   

• Top rail: No cracks or collision damage.
• Clearance lights: Not broken, working properly.
• Registration: Not missing, readable.
• Document box: Not missing or loose.
• Air line /glad hands: No bulges or cuts in air lines, rubber grommets not damaged on glad hands.
• Electric hook up: No broken pins, cover intact.
• PM sticker: Current, legible.
• Height sticker: Legible, legal for route.
• Placard holder: Not broken or missing rivets.
• Tracking device: No cracks or collision damage.

12. Side of trailer:   

• Top rail: Not cracked, no collision damage.
• Clearance light: Not broken, operational.
• Bottom light: Not cracked, no collision damage, no missing bolts.
• Landing gear: Legs straight, no broken welds in bracing, sand pads secured and clean handle in cradle.
• Reflector tape: Clean.
• Side panels: No holes or cuts, no missing rivets.

13. Rear of trailer:   

• Latches: Secured, not damaged.
• Lights: Not broken or missing, operational.
• Splash guard: Brackets and guard secured.
• License plate: Secure and clean, light is working.
• Bumper: Not damaged, no broken welds.
• Door hooks: Not loose, no missing bolts.
• Hinges: Not cracked, no missing bolts on both sides.
• Door seals: No separation, no rubber tubing sticking out.

14. Trailer suspension:   

• Air line: No bulges or cuts, fittings are tight and not rubbing.
• Axle: Not bent or broken.
• Clevis pin/cotter key: Not missing.
• Slack adjuster: Proper angle, clevis pin and cotter pin intact.
• Brake linings: Minimum of ¼ inch thick, not cracked.
• Brake drum: Not cracked.
• Tire: (ABCs), tread depth = 2/32 , air pressure = 110 PSI.
• Spring: Not broken, not shifted.
• Spring mount: No broken welds.
• U bolts: Not loose, not cracked.
• Torque rod: Secure mounting, bushings intact.
• Spring brake chamber: Secure m ounting , band clamp secure.

15. Gauges/inside the truck:   

• Fuel: Matches visual when looking in the tank.
• Def level: Maintain a minimum of one light bar.
• Oil pressure: 25-50 PSI.
• Speedometer: 0-60 MPH.
• Air pressure: 90-120 PSI.

Please note that the list above is just an example. It is important to remember the type of driver you are, the company you work for and the type of truck you drive can impact your CDL pre-trip inspection . Be sure to consult your company guidelines or speak with your leader for more information on your post-trip inspection requirements.  

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CDL Pretrip Test

Boost your confidence: the essential cdl pretrip practice test prep, cdl pretrip practice test: essential tips for passing your exam, understanding the importance of cdl pretrip practice test.

At the onset of your journey to becoming a commercial driver, it is vital to comprehend the significance of the CDL pretrip practice test. This evaluation is designed to assess your ability to inspect a vehicle for safety and operational issues, as well as to ensure you are familiar with the components of a commercial vehicle.

Familiarizing Yourself with the Inspection Requirements

Before embarking on the CDL pretrip practice test, it is imperative to acquaint yourself with the inspection requirements mandated by the Department of Transportation (DOT). Familiarize yourself with the various components of a commercial vehicle, including the engine compartment, coupling systems, brake systems, and more.

Effective Strategies for Acing the CDL Pretrip Practice Test

• Consistent Practice Regular practice is paramount to success in the CDL pretrip practice test. Devote time to conducting thorough inspections of commercial vehicles, ensuring you are well-versed in identifying potential safety hazards and mechanical issues.
• Utilize Study Materials Leverage study materials such as manuals, online resources, and practice test questions to reinforce your understanding of commercial vehicle components and inspection procedures.
• Seek Guidance Seek guidance from experienced commercial drivers or instructors to gain valuable insights and tips for acing the pretrip practice test. Their practical knowledge and advice can significantly enhance your preparedness.

Embracing the Opportunity for Growth

Approach the CDL pretrip practice test as an opportunity for personal and professional growth. Embrace the challenge and commit to honing your skills in vehicle inspection, as this will not only bolster your chances of passing the test but also contribute to your overall competence as a commercial driver.

By embracing a proactive approach to mastering the CDL pretrip practice test, you can instill confidence in your abilities and pave the way for a successful career in commercial driving. Remember, preparation and diligence are key to conquering this pivotal assessment.

In conclusion, the CDL pretrip practice test serves as a fundamental evaluation of your ability to conduct thorough vehicle inspections, thus emphasizing the importance of meticulous preparation and dedication to mastering commercial vehicle components and inspection procedures. As you embark on this journey, equip yourself with the knowledge and commitment required to excel in the test and lay a solid foundation for a flourishing career in commercial driving.

Class A Pre-Trip Inspection Study App

The CDL Pre-Trip Inspection can be the most daunting portion of the driving test. But, it's easy if you study.

Use this FREE study guide to prepare for your CDL Skills test.

Would you like a video version of the Pre-Trip Inspection? Scroll to the bottom of this page for a free video.

Courtesy of CDL College .

Metal Parts: cannot be broken or cracked and must be securely mounted. Rubber Parts: no abrasions, bulges, or cuts. Parts that hold a Fluid or Air: cannot be leaking. Example: the engine air compressor (a metal part) is securely mounted, not cracked, gear-driven, and has no audible leaks.

• The Pre-Trip Inspection is a verbal test. • Say at least 2 things about every item you inspect. • Point to, or touch, every item that you inspect. • Mention all damaged items to the tester.

01: Engine Compartment + 1 Axle

Stand in front of the truck.

(3 L’s) Lights, Leans, Leaks

Verify that the LIGHTS on the front of the truck are the proper color, securely mounted, not cracked or broken, and clean.

Next, make sure the truck isn’t LEANing to one side, which could indicate a suspension problem or low tire pressure.

Ensure there are no LEAKS underneath the engine compartment.

Check the front of truck for damage. When you find damage on the vehicle, tell the tester that you’ll note it on your Vehicle Inspection Report.

3 Components

Alternator: securely mounted, not cracked; wires are properly fastened and not frayed. Belt or gear driven: If belt-driven, belt has no more than 1/2" to 3/4" of play, and no cuts or splits.

Water Pump: (see box on right) properly mounted and not broken; no visible leaks; belt or gear driven: belt has no more than 1/2" to 3/4" inch of play and no splits or cuts.

Air Compressor: securely mounted to engine, not broken or cracked; no audible leaks; belt or gear driven: belt has no more than 1/2" to 3/4" inch of play and no splits or cuts.

Coolant: verify proper level through sight glass or dipstick; reservoir is properly mounted not cracked; check the hoses for splits or cuts and ensure they are securely mounted at both ends.

Oil: indicate where the dipstick is located and that the oil is at the proper level.

Power Steering: verify proper level through sight glass or dipstick; reservoir is securely mounted and not cracked; check the hoses for splits or cuts and ensure they are securely mounted at both ends.

Belts and Hoses

After properly inspecting the power steering hose and the coolant hose , tell the tester that you would inspect all remaining hoses the same way. After properly inspecting the alternator belt , tell the tester that you will inspect all remaining belts the same way.

Steering Shaft: not bent or broken and securely mounted; no excessive play. Steering Gear Box: properly mounted to frame and not cracked or broken; no visible leaks; HOSE has no visible leaks and is properly mounted at both ends.

Pitman Arm: not cracked and securely mounted, all hardware is present. Castle nuts and cotter pins are present and tight. Drag Link: not broken and properly mounted at both ends. Rubber bushings: not split or cut and properly greased. Upper/Lower Control Arms and Tie Rod: not broken and securely mounted, all hardware present.

Spring Mounts: spring mounts and hardware are not cracked or broken and properly mounted to frame. Leaf Springs: not cracked or broken, not shifted or scissored; properly mounted to spring hangers. U-bolts: not cracked or broken and securely mounted.

Shock Absorber: not bent or broken and mounted securely; no visible leaks; rubber bushings have no dry-rot.

Brake Hose: hose to brake chamber not split or cut, no audible leaks, and securely mounted at both ends. Brake Chamber: not cracked or broken and securely mounted; no audible leaks. Slack Adjuster: no missing hardware and properly mounted; push rod has no more than 1" of play and is at a 90° angle to brake chamber. Brake Drum: securely mounted and not broken, no bluing from excessive heat. Brake Pads: securely mounted and not broken; minimum brake pad thickness is 1/4".

Wheel inside: not broken and securely mounted; no welding repairs. Tire: sidewalls have no cuts or bulges; steer tire tread depth is 4/32" min.; tread is evenly worn; check inflation w/ air gauge (do not kick tires) ; no re-treads on steers. Wheel outside: securely mounted and not cracked, no illegal welds. Valve Stem: properly secured and not broken; no audible leaks, has a metal cap. Lug Nuts: not cracked or broken; all lug nuts are present and tight. Hub Seal: not cracked, broken, or loose; no visible leaks. End this portion of the inspection at the Hub Seal.

02: Side and Back of Truck + 1 Axle

Side and back of truck.

Mirror bracket: properly attached to truck and not broken, all hardware in place. Door: securely mounted and opens and closes; hinges not broken and securely mounted; rubber seal not split or cut and is properly mounted. Steps: hold my weight, not loose, no debris. Fuel tank: not leaking and no loose hardware; cap is tight, seal intact and chain present. Exhaust: not loose, all hardware present, no evidence of leaks (exterior soot). Cat Walk and Steps: properly mounted and not excessively dirty. Frame: not twisted or broken and no illegal welds. Drive Shaft: not cracked or broken, U-joints not broken and have no foreign objects. Rear truck lights: proper color, all lights are present, not cracked or dirty, no moisture inside the lens. Mud Flap: bracket is securely mounted and not cracked, all hardware in place; mud flap not split or cut. DOT tape is securely mounted, not dirty, covers 100% of rear. Space: enough space between rear of truck and landing gear for turns.

Note: axle suspension components can be different from truck to truck. You should determine which suspension components are present and inspect those components. Axles consist of suspension, brakes, wheels, and tires. Spring mounts: spring mounts and hardware are not cracked or broken and properly mounted to frame. Leaf Springs: not cracked or broken, not shifted or scissored; properly mounted to spring hangers. U-bolts: not cracked or broken and securely mounted. Shock Absorber: not bent or broken and mounted securely; no visible leaks; rubber bushings have no dry-rot. Air Bags: not split or cut, no audible leaks; mounts are properly secured and not cracked. Brake Hose: hose to brake chamber not split or cut, no audible leaks, securely mounted at both ends. Brake Chamber: not cracked or broken and securely mounted; no audible leaks. Slack Adjuster: no missing hardware and properly mounted; push rod has no more than 1" of play and is at a 90° angle to brake chamber. Brake Drum: securely mounted and not broken, no bluing from excessive heat. Brake Pads: securely mounted and not broken; minimum brake pad thickness is 1/4". Wheel inside: not broken and securely mounted; no welding repairs. Tires: sidewalls have no cuts or bulges; tread depth on drive tires is 2/32" min.; evenly worn; check inflation w/ air gauge (do not kick tires) ; can be re-treads; Dual Tires: no foreign objects between tires, no gap between wheels. Wheel Outside: not cracked, securely mounted, no welding repairs. Valve Stem: properly secured and not broken; no audible leaks, has a metal cap. Lug Nuts: not cracked or broken; all lug nuts are present and tight. Hub Seal: not cracked, broken, or loose; no visible leaks. End this inspection at the Hub Seal.

03: Connections

Locate the air lines and the electrical line at the rear of the cab.

Air Lines should be securely mounted at BOTH ends. All hardware is present, nothing broken. Lines have no cuts or splits and no audible leaks. Glad hands are locked in place, not broken, and seals are not split or cut.

Electrical line is securely mounted at BOTH ends. All hardware is present and tight. Lines have no cuts or splits. Safety latches are in place. Lines are not tangled or dragging on catwalk.

Fifth Wheel Assembly: Apron: securely mounted, not cracked or broken. No gap between apron and skid plate. Skid Plate: properly greased, securely mounted, not cracked. Pivot pin is securely mounted, not cracked or broken. Platform: is securely mounted to frame and not cracked or broken. Release Handle: securely mounted, not broken and in locked position. Sliding Fifth Wheel? The actuator is not cracked or broken; air line is securely mounted, no audible leaks, no cuts or splits).

Kingpin and Locking Jaws: securely mounted and not worn. Locking jaws are secure around kingpin, both are properly greased.

04: Trailer + 1 Axle

Start at the front of the trailer, then inspect the side and the back. Finish with a trailer axle. Front of Trailer: clearance lights are the proper color, not loose, cracked, or dirty, and clean. Front of trailer has no holes, all rivets present. Side of Trailer: no holes in side of trailer, all rivets in place. DOT tape: properly secured, not dirty, covers at least 50% of the side. Frame: not twisted or broken, all hardware present and tight. Cross members: securely mounted, not loose or broken, none missing. Floor: securely mounted and no holes. Landing gear: is raised, not broken, securely mounted; Handle not broken, securely mounted, and operational. Clearance light: proper color, not loose, cracked or dirty; rubber gasket not split or cut. Air lines: are securely mounted under trailer, no audible leaks, not dragging on the ground. Tandem slide: not bent, properly mounted, pins locked in place. Release arm: securely mounted, not broken, and in locked position. Mud flap: securely mounted, no cuts, and proper distance from tire and ground. ABS light: not cracked or dirty, proper color, no moisture inside

Back of Trailer: clearance lights are the proper color, not cracked or dirty, and clean. Hinges: are securely mounted, bot cracked or broken. Doors: not broken, no holes; door seal intact, no cuts, securely mounted. Door handles and rods: are not bent, are securely mounted, and operational. Lights: proper color, securely mounted, not loose, cracked or dirty. DOT tape: is securely mounted, clean, and covers 100% of rear. Bumper: is properly secured, not cracked or broken.

Trailer Axle

Note: axle suspension components can be different from truck to truck. You should determine which suspension components are present and inspect those components. Axles consist of suspension, brakes, wheels, and tires.

Trailing Arm Mount: securely mounted to frame, not broken or cracked. Spring mounts: spring mounts and hardware are not cracked or broken and properly mounted to frame. Leaf Springs: not cracked or broken, not shifted or scissored; properly mounted to spring hangers. U-bolts: not cracked or broken and securely mounted. Shock Absorber: not bent or broken and mounted securely; no visible leaks; rubber bushings have no dry-rot. Air Bags: not split or cut, no audible leaks; mounts are properly securedand not cracked. Brake Hose: hose to brake chamber not split or cut, no audible leaks, securely mounted at both ends. Brake Chamber: not cracked or broken and securely mounted; no audible leaks. Slack Adjuster: no missing hardware and properly mounted; push rod has no more than 1" of play and is at a 90° angle to brake chamber. Brake Drum: securely mounted and not broken, no bluing from excessive heat. Brake Pads: securely mounted and not broken; minimum brake pad thickness is 1/4". Wheel inside: not broken and securely mounted; no welding repairs. Tires: sidewalls have no cuts or bulges; tread depth on drive tires is 2/32" min.; evenly worn; check inflation w/ air gauge (do not kick tires) ; can be re-treads; Dual Tires: no foreign objects between tires, no gap between wheels. Wheel Outside: not cracked, securely mounted, no welding repairs. Valve Stem: properly secured and not broken; no audible leaks, has a metal cap. Lug Nuts: not cracked or broken; all lug nuts are present and tight. Hub Seal: not cracked, broken, or loose; no visible leaks. End this inspection at the Hub Seal.

05: External Light Check

Follow the flow to avoid missing any lights: 4 sides for the truck, 4 sides for the trailer.

Group similar lights together (headlights and high beams; turn signals and 4-way flashers; brake lights and tail lights).

TRUCK LIGHTS

Front: clearance lights, headlights, high beams, left turn, right turn, 4-way flashers

Left side: clearance light, left turn, 4-way flasher

Rear: tail lights, brake lights, left turn, right turn, 4-way flashers

Right side: clearance light, right turn,4-way flasher

TRAILER LIGHTS

Front: clearance lights

Rear: clearance lights, tail lights, brake lights, left turn, right turn, 4-way flashers

Right side: clearance light, right turn, 4-way flasher

06: In Cab and Brake Test

Memorize this formula: 5, 5, Safe Start, 5, 5 5 safety items 5 in cab items Safe Start 5 gauges 5 -step brake check

5 Safety Items

5 in cab items.

Follow the blue spiral shape below to remember the 5 in cab items. Mirrors: glass not dirty or cracked, no illegal stickers, mirrors properly adjusted. Windshield: securely mounted, not dirty or cracked, no illegal stickers. Windshield wipers: arms properly mounted and not broken; blades have no splits or cuts, wipers and wiper fluid are operational. Heater/defroster: demonstrate both are operational by setting fan to max, and the mix valve to heat/defrost. Dashboard light indicators: turn the lights on and check the indicators for the high beams, right and left turn signals, and 4-way flashers.

Tell the examiner these 3 steps before you perform them: parking brake is set, transmission in neutral, and the clutch is depressed. Start the engine and look for the ABS light on the dash to come on and then go off. With the vehicle started, check the gauges.

Oil gauge: operational, rising to proper operating range, no warning light. Temperature gauge: operational, rising to proper operating range, no warning light. Voltmeter: operational, at the proper operating range, 12-14 volts. Air gauges (2): building air to proper operating range, no warning lights.

5-step Brake Test

Explain each step before performing it. With the first 2 steps, you’re either trying to move the vehicle, or you are moving the vehicle. The engine must be ON for the first 2 steps. 1) Parking Brake: release trailer brake (push RED valve IN); slowly release the clutch, tugging lightly against the parking brake. Push clutch in. (Leave everything in the truck as it is). 2) Service Brake: (brake pedal) release parking brake (BOTH valves should be IN), pull forward to 5 mph, depress clutch and brake while lightly gripping the steering wheel; check if vehicle pulls to the left or right. (Leave everything in the truck as it is).

**Turn the engine OFF, and turn the key ON for the next 2 steps. You’ll need power for your gauges.**

Air Compressor check: perform a Safe Start. Idle up the engine (1200RPM) until the secondary air tank reads 85psi. At 85psi begin counting. The air pressure must rise from 85 to 100psi in 45 seconds or less. Next, fast idle the truck up to 120-140psi, at which point the governor cut-out should occur. Psshhh!

Class A CDL Pre-Trip Inspection Video

Want the youtube version of the Class A Pre-Trip Inspection video? Watch the youtube version.

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Class A Pre-Trip Inspection Study App Copyright© 2018 CDL College

CDL Pre Trip Inspection Practice Test

After you read the  CDL pre trip inspection study guide take this Class A pre trip inspection practice test. In it you’ll find questions and answers about checking components in the engine compartment, driver door fuel area, trailer, and in the cab.

Any answers not found in the pre trip inspection study guide will be found in section 11 of this online CDL manual .

You got at least 80% correct, nice job. If you didn’t get 100% correct study some more and try again.

You didn’t get 80% correct, study more and try again.

#1. Check the following belts for snugness (up to 3/4 inch play at center of belt), cracks, or frays:

#2. true or false: u bolts and tie rod are found in the engine compartment., #3. the five functions of the lights are: left turn signal; right turn signal; four way flashers; ___________; ___________, #4. true or false: when checking the steer tire tread depth should have a depth no less than 4/32 of an inch., #5. true or false: with the brakes released and pulled by hand, the push rod should never move more than 2 inches., #6. when checking the __________________ make sure it’s not leaking and it’s filled to the manufacturer’s specifications., #7. when checking the ____________ there should be none missing. look for rust trails powder residue and cracks around the bolt holes., #8. when checking the belt driven alternator it should not be cracked or frayed and the free play on the belt should be between _____________, #9. true or false: the brake chamber, brake drum and brake hose should be checked in the engine compartment, driver door fuel area and trailer., #10. true or false: when checking the drive shaft, it should not be twisted and the u-joints should be free of any debris., #11. the airbag is made out of _________., #12. on the brake lining, there should be at least _____ of an inch of friction material., #13. when checking the drive tire the tread and sidewalls should have no abrasions, bulges or cuts and the tread depth should be no less than _______ of an inch., #14. true or false: when checking trailer tire, there should be no abrasions, bulges or cuts to the tread or sidewalls. tread depth should be no less than 2/32 of an inch. the tire should be properly filled to manufacturer’s specifications and checked with an air gauge., #15. there are how many stages in an air brake test, #16. in cab emergency equipment should include a fire extinguisher, 3 red reflective triangles and ____________., #17. true or false: it is sufficient to visually check that the locking jaws is fully locked around the king pin., #18. true or false: any space between the apron and the skid plate is called a “gap”. and there should be no space between the apron and the skid plate., #19. the light check includes: ____________ both sides of the truck; rear of the truck; both sides of the trailer; rear of the trailer., #20. true or false: when inspecting the coolant level of a hot engine you will inspect the reservoir sight glass. if the engine is not hot, remove the radiator cap and check for a visible coolant level., #21. check that the landing gear is __________, has no missing parts, the crank handle is secure, and the support frame is not damaged., #22. true or false: you will not get credit if you simply kick the tires or strike the tire with a mallet or other similar device to check for proper inflation. you must use a tire gauge..

The vehicle inspection test is a skills test to see if the student can identify which features and equipment on the truck should be inspected before operating the class A vehicle, and in what condition these features or equipment should be in.

Find a local CDL training school .

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Serving your CDL Learner Permit requirement needs

• CDL Permit Training Program | CDL Pre-Trip Inspection
• CDL Pre-Trip Inspection

You must obtain and maintain your CDL in your state of residence. This is normally the state where your regular driver\'s license was issued. If you plan on moving soon, you may want to choose your new state of residence.

CDL Pre-Trip Vehicle Inspection Walk-Around Skills Test

First of three cdl skills tests - the cdl vehicle pre trip inspection skills test must be passed prior to being allowed to continue..

You must obtain and maintain your CDL in your state of residence. This is normally the state where your regular driver's license was issued. If you plan on moving soon, you may want to choose your new state of residence.

There are THREE parts to the CDL Skills Test

• First Part: CDL PreTrip Inspection on THIS page . . .
• Second Part: CDL Basic Vehicle Control
• Third Part: CDL Road Test

CDL Pre Trip Inspection Diagram

Vehicle Pre-Trip Checklist Inspection CDL Skills Tests:

Quick study guide to cdl pre-trip inspection.

• Engine Compartment
• Cab Check and Engine Start
• Brake Check
• External Cab

1. CDL Engine Compartment Pre-Trip Inspection

• Look for puddles on the ground that would indicate a leak.
• Look for dripping fluids on the underside of the engine and transmission.
• Inspect hoses for �good� condition and leaks.
• Indicate the location of dipstick.
• Make sure the oil level is within safe operating range and above the refill mark.
• a) Checking the reservoir sight glass, or
• b) Removing the radiator cap if the engine is not hot and visually checking the coolant level.
• Indicate the location of the power steering fluid dipstick.
• Confirm that there is an adequate power steering fluid level that is above the refill mark.
• power steering belt
• water pump belt
• alternator belt
• air compressor belt

2. CDL Cab Check and Engine Start - Pre-Trip Inspection

• Manual Transmissions:
• Depress the clutch.
• Place the gearshift lever in neutral.
• Start the engine and then slowly release the clutch.
• Automatic Transmissions:
• Confirm the vehicle is in �park� and start the engine.
• Confirm that the oil pressure gauge is functioning.
• Make sure that the pressure gauge shows increasing or normal oil pressure, otherwise that the warning light goes off.
• If equipped with an oil temperature gauge, it should begin to gradually rise to a normal operating range.
• Confirm that the temperature gauge is working.
• The temperature gauge should begin to climb to the normal operating range.
• The gauges should show the alternator and/or generator charging; otherwise the warning light should be set off.
• Check for proper operation and acceptable readings on the air and vacuum gauges.
• The speedometer should not be obscured or obviously broken.
• Mirrors should be clean and adjusted properly from the inside.
• Windshield should be clean with no illegal stickers, obstructions, or damage to the glass.
• Three red reflective triangles.
• One properly charged and rated fire extinguisher.
• Spare electrical fuses.
• Power steering equipped vehicles: With the engine running, play should not exceed 10 degrees (or about two inches on a 20-inch wheel) before the front left wheel barely moves when you turn the steering wheel back and forth.
• Non-power steering vehicles: Play should not exceed 10 degrees (or about two inches on a 20-inch wheel) when you turn the steering wheel back and forth.
• Check that the wiper arms and blades are not damaged and operate smoothly.
• Windshield washers must operate correctly if the vehicle is equipped.
• Left turn signal
• Right turn signal
• 4-way emergency flashers
• High beam headlight
• Check that air horn and/or electric horn are operational.
• Test that the heater and defroster works.
• Check that the safety belt is securely mounted, adjusts, and latches properly.
• Clearance lights (red on rear, amber elsewhere)
• Headlights (high and low beams)
• Turn signals
• 4-way flashers
• Brake lights
• Red reflectors (on rear) and amber reflectors (elsewhere)

3. CDL Brake Check Pre-Trip Inspection

• Apply parking brake only and shift into a lower gear. Gently pull against the brake by releasing the clutch, and it should hold the vehicle.
• With the engine running, apply the foot brake and hold for five seconds. The pedal should not move (lose pressure) during those five seconds.
• If equipped with a hydraulic brake reserve system, with the key in the off position, depress the brake pedal and listen for the sound of the reserve system electric motor turning on.
• Check that the warning buzzer and light is off.
• Check the proper operation of the foot brake by moving the vehicle forward slowly at about 5 mph and applying the brake firmly.
• With a fully-charged air system, typically at 120 psi, turn the engine off, chock the wheels, release (push in) the parking brake button and trailer air supply button (for combination vehicles) and time the air pressure drop. After the initial drop, the rate of pressure loss should not be more than 2 psi per minute for single vehicles and no more than 3 psi per minute for combination vehicles
• Release (push in) the parking brake and trailer air supply button (for combination vehicles), and apply pressure to the foot brake. After the initial drop in pressure, the rate of pressure loss should be no more than 3 psi per minute for single vehicles and no more than 4 psi per minute for combination vehicles.
• Turn the key to the on position. Rapidly depress and release the foot brake to reduce air tank pressure. The low air pressure warning signal must come on before the pressure drops below 60 psi.
• Continue to rapidly apply and release the service brake pedal further reducing air pressure. The trailer air supply button (for combination vehicles) and parking brake button should pop out when the pressure falls to usually between 20 to 40 psi. This should activate the spring brakes.
• While the engine is operating at 1800 RPM, the pressure should rise from 85 to 100 psi within 45 seconds in dual air systems.
• With normal air pressure, release the parking brake and trailer air supply button (for combination vehicles), move the vehicle forward slowly at about 5 mph and apply the brakes firmly using the brake pedal. Test for any pulling to any one side or delayed stopping action.

4. CDL External Cab | Truck | Bus Pre-Trip Inspection

• Check that the steering box is mounted securely and is not leaking.
• Check for damage to power steering hoses and power steering fluid leaks.
• Check that connecting links, arms, and rods from the steering box to the wheels are not worn and cracked.
• Check that the joints and sockets are not loose or worn and that there are no missing nuts, bolts, or cotter keys.
• Check for shifted, cracked, broken, or even missing leaf springs.
• Check for broken and distorted coil springs.
• If equipped, check the air ride suspension for damage and leaks.
• Look for cracked or broken spring hangers, missing or damaged bushings, and broken, loose, or missing bolts, U-bolts or other axle mounting parts.
• Confirm that the shock absorbers are secure and that there are no leaks.
• Look for missing, loose or broken parts.
• The angle between the adjuster arm and push rod should be not less than 90 degrees when the brakes are applied and when the brakes are released a little over 90 degrees.
• When pulled by hand, the brake rod should not move more than one inch with the brakes released.
• Check that brake chambers are not dented, cracked, or leaking and that they are mounted securely.
• Check for worn, cracked or leaking hoses, lines, and couplings.
• Check for dents, cracks or holes, and loose or missing bolts.
• Brake linings and pads should not be worn thin.
• Where visible, check that a reasonable amount of brake lining is showing.
• Check for damaged or bent rims. Rims cannot have welding repairs.
• Tread depth: need a minimum tread depth of 4/32 on steering axle tires, 2/32 on all other tires.
• Tire condition: Check that tread is evenly worn and without cuts or damage to tread or sidewalls. Valve caps and stems should not be missing, broken, or damaged.
• Tire inflation: Check for proper inflation with a tire gauge or by striking tires with a mallet.
• Check that hub oil/grease seals and axle seals are not leaking.
• Check for any missing lug nuts, cracks, distortions, and for signs of looseness such as rust trails or shiny threads.
• Check for cracked or distorted bolt holes.
• Spacers should not be bent, damaged, or rusted through.
• Spacers should be centered evenly.
• Check doors for any damage and that they open and close properly.
• Hinges should be secure with seals intact.
• Mirrors and mirror brackets should be mounted securely.
• Check for secure tanks, tight caps, and that the tanks or lines don�t leak.
• Check to see that batteries are secure, for tight cable connections, and that cell caps are present.
• Check for signs of excessive corrosion.
• Battery box and cover/door must be secure.
• The drive shaft should not be bent or cracked.
• Couplings should be secure.
• Check system for rust or carbon soot as they are signs of damage or leaks.
• System should be secure and connected tightly.
• Check the longitudinal frame members, cross members, box, and floor for cracks, broken welds, holes or other damage.
• If equipped with mud flaps or splash guards, check that they are mounted securely and not damaged.
• Doors and hinges must open, close, and latch properly from the outside, and should not be damaged.
• Check that any ties, straps, chains, and binders are secure.
• If equipped with a cargo lift, it must be fully retracted and latched securely, and should not be leaking, damaged or missing any parts.
• Check that electrical lines and air hoses are not cut, chafed, spliced, or worn, the steel braid should not show through its outer lining.
• Make sure the lines and hoses are not tangled or dragging against tractor parts.
• Make sure the catwalk is securely bolted to tractor frame.
• Check for loose or missing mounting brackets, clamps, bolts, or nuts. The fifth wheel and the slide mounting must be solidly attached.
• Other types of coupling systems should be inspected for missing or broken components.
• Check that the locking jaws fully close around the kingpin
• On other types of coupling systems the locking mechanism should not have missing or broken parts and should lock securely.
• The platform structure supporting the fifth wheel skid plate should be free of cracks or breaks.
• If equipped with a release arm, check that it engaged and that the safety latch is in place.
• The kingpin should not be bent.
• The visible part of the apron should not be bent, cracked, or broken.
• The trailer should be laying flat on the fifth wheel skid plate without any gap.
• Locking pins should be fully engaged.
• The fifth wheel should be positioned so the tractor frame will not strike the landing gear or the tractor.

5. CDL Trailer Pre-Trip Inspection

• The trailer air connectors should be sealed and in good condition.
• Glad hands should be locked in place and free of damage or air leaks.
• The trailer electrical plug should be firmly seated and locked in place.
• If equipped with a header board, check to see that it is secure, damage-free and strong enough to contain cargo.
• If equipped with a canvas or tarp carrier, it should be mounted and fastened securely.
• Check the front area of enclosed trailers for cracks, bulges or holes.
• The landing gear must be fully raised. Check that it has no missing parts with a non-damaged support frame and that the crank handle is secure.
• Check for air or hydraulic leaks if power operated.
• Check that doors are not damaged and that they open, close, and latch properly from the outside.
• Ties, straps, chains, and binders should be secure.
• Any cargo lifts should be checked for leaking, damaged or missing parts, and should be fully retracted and latched securely.
• The frame, cross members, box, and floor should be checked for holes, cracks, broken welds or other damage.
• If equipped, make sure that the release arm is secured and that the locking pins are locked in place.
• Suspension System
• Doors, Ties and Lift
• Splash Guards

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How To Study For the CDL Pre-Trip Inspection

As a professional truck driver, there are crucial tasks to complete to be safe and stay compliant. One of the most important tasks is a CDL pre-trip inspection. Not only does this keep you and everyone else on the road safer, but it is required to remain compliant with FMCSA rules and regulations.

The nation has deemed truck drivers essential, and the industry needs new drivers more than ever. Roadmaster can help you start a new high paying career in about a month. And as a professional truck driver, there are crucial tasks to complete to be safe and stay compliant. These are the very things you’ll find when studying and testing.

One of the most important tasks is a CDL pre-trip inspection. Not only does this keep you and everyone else on the road safer, but it is required to remain compliant with FMCSA rules and regulations . It also keeps you in-the-know about how your truck is performing and if there are any issues that need to be addressed.

Here is a guide on how to study for a CDL pre-trip inspection.

What Is a CDL Pre-Trip Inspection?

The definition of a pre-trip inspection is self-explanatory – it is a complete assessment of the trailer, truck, and cargo before each trip. The DOT has a pre-trip inspection list and the guidelines dictate to follow their list. Rules dictate to document everything using a DVIR or driver vehicle inspection report according to federal law FMCSR Section 396.11.

A professional truck driver must have any problems found with the truck and trailer addressed before leaving. This includes things like damage or other issues affecting the trip. The inspection process should be thorough and doesn’t take long – around 15 minutes or so. During this time, the driver must report as on duty,  not driving.

This is one important aspect to learn in becoming a driver, so studying it is crucial.

Why Is It Important?

Your safety and the safety of others.

Any kind of issue with your truck can cause safety concerns. From damaged brakes to an unsecured load – these are the very things you are looking for with the inspection. It keeps you on your toes and ensures you know that every trip is the safest possible. This also has the added benefit of keeping you on the road more. You’ll avoid violations that ground you till it’s fixed. And you can better avoid an accident because of a fixable issue.

By learning this information and studying it, you’ll have the knowledge you need to prepare for the exam.

It’s the Law

It is your responsibility as a professional truck driver to ensure your truck is safe and road-ready. This means not only is it safe to operate, but it is free of issues that cause accidents. This has other benefits too. By catching any problems yourself, you are less likely to get a violation.

It Saves Extra Costs

With any situation, catching a problem before it’s a bigger problem is ideal. Instead of finding out you have a major repair, you might be able to find it while it’s still easily fixable. Plus, you have time to take it to a shop rather than a roadside service that costs more and is less convenient. And let’s not forget about how expensive towing is.

Steps in Studying for a CDL Pre-Trip Inspection

Now that you know how important a CDL pre-trip inspection is to your livelihood, here are the steps in conducting one. We showcase these steps to help you study for what the exam requires.

Under the Hood

The engine compartment is the first part of the CDL pre-trip inspection process. This is before you start the truck and the inspections include:

• Make sure kingpins, ball joints, and shocks look good and have lubrication
• Check fluid levels including windshield washer fluid, coolant, and oil
• Look at steering axle tires for uneven wear
• Look for fluid drips or leaks in and around the engine
• Secure the dipstick and tighten any loose caps
• Look for wear or damage to belts and hoses
• Check the blade and fan belt for cracks, nicks, or any other damage
• Check wiring for damage like frays or misplacement
• Air conditioner compressor mounting secure
• Ensure engine air ductwork has secure clamps and no cuts
• No exhaust leaks or oil in the turbocharger
• Check fuel water separator, radiator brace, water pump, pitman arm, oil filler cap
• Inspect engine coolant reservoir, steering shaft, and brake master cylinder

If you find anything wrong, notate it in the DVIR. Notate important information and use photographs. The truck cannot leave until you appropriately fix these issues.

Take a Walk Around

Do an external inspection next. This is where you walk around your truck checking for problems. These include:

• Check all tires for proper pressure, damage, and wear and tear
• Check valve cap, outer oil seal, lug nuts, and hub oil
• Look for proper positioning in brake pads and that they are in good shape
• Inspect brake drum, lining, inner oil seal, slack adjuster, brake line, and chamber
• Inspect airlines and the electrical cord for proper connection
• Inspect the landing gear to ensure the legs are up and secured
• Ensure the 5th wheel is securely coupled to the trailer
• Look for mirror damage such as nicks and cracks
• Ensure doors close properly with secure hinges

Start Your Engine

Before leaving your location, you must ensure the engine is mechanically sound. These key components of the last inspection are:

• With the clutch depressed and the truck in neutral, start the engine
• As you ease off the clutch, idle the truck at 650rpm
• Check your gauges to ensure everything is as it should be
• Turn on your flashers and lights and step out to make sure they are all working
• Look under the hood for leaks and secure belts
• Make sure all lights are working properly

After this inspection, notate any anomalies in the DVIR. This includes things like repairs or part replacements.

The Last Steps

The last step involves moving your truck. Make sure there is nothing in the way or anything that causes a safety hazard.

• Drive forward a few feet and use the trailer brake, making sure the trailer is coupled and the brake works right
• Pull forward a few feet more, using the foot brake to stop

Look for anything not up to par and report it. This is one of the most repetitive tasks you’ll do and the most common. And therefore, it is on the test. You also need to know when to do these steps:

• Each start of the day
• After 10 hour breaks
• Every 24 hours
• When you pick up a new trailer

Ready To Learn More?

These are steps to learn that are on the test. Study these components of the CDL pre-trip inspection so it prepares you to ace the exam.

Once you have your Class A CDL license you are ready to apply for entry-level truck driver jobs. If you attend a truck driving school like Roadmaster, a career services associate will help you apply for your first job. And they’ll assist you in getting your new career started.

During the first few days of school, Placement Associates work with you to choose which company best fits your needs. They will review your job applications and help you submit them to potential employers. The placement staff will follow up with potential employers and notify you of employment offer letters.

Tuition reimbursement could cover up to 100 percent of the cost of school! We offer in-house financing to those who qualify to help cover the cost of tuition. Trucking carriers that recruit from Roadmaster offer up to 100 percent tuition reimbursement .

If you are ready to get your career started as a professional truck driver, contact Roadmaster by filling out the application form or calling us at 1-800-831-1300.

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• Vehicle Inspection Page 1

1. CDL Requirements & Tests

2. CDL Endorsements & Restrictions

3. CDL License Restrictions

4. CDL Training: Learn to Drive

5. CDL Medical Documentation

6. CDL Disqualifications

7. CDL Traffic Violations

8. IRP & IFTA for CDL Drivers

1. Drive Safely

2. CDL Training: Look For

3. CDL Vehicle Inspection

4. Seven-Step Inspection Method

5. 7-Step Inspection Method

6. Proper Vehicle Control

7. Shifting Gears

8. CDL Training: Seeing Around

9. Signaling Intentions

10. Controling Speed

11. Match Speed with Road

12. Drive Safely on Curves

13. Managing Space

14. Managing Vehicles Around You

15. Safe Turns in Truck/Bus

16. Spot Hazards on Road

17. Spot Hazards on RoadCDL Training

18. See Hazards on Road

19. Distracted Driving CDL

20. Aggressive Driving & Rage

21. Driving at Night CDL

22. Night Driving Procedures

23. Drive Safely in Fog

24. Vehicle for Winter Driving

25. Drive in Winter Conditions

26. Driving In Hot Weather

27. Railroad-Highway Crossings

28. Safe Railroad Crossing

29. Mountain Driving CDL

30. Brake Fade

31. Avoid Driving Emergencies

32. Stop Quickly and Safely

33. Recognize Tire Failure

34. Antilock Braking Systems

35. ABS to Brake Safely

36. Learn Braking Without ABS

37. Skid Control & Recovery

38. Truck Accident Procedures

39. Truck Fire Causes & Prevention

40. Alcohol & Drugs & Driving

41. Stay Alert & Fit to Drive

42. Stay Alert While Driving

43. Hazardous Materials Rules

44. Safely Load Hazardous Products

1. Cargo Safety

2. Legal Weight Limits for Trucks

3. Secure Cargo for CDL

4. Handle Special Cargo

1. Transporting Passengers

2. Load & Trip Start a Bus

3. Passenger Supervision & Accidents

4. Drawbridges & Brake-Door Interlocks

1. Learn Air Brakes

2. Air Brake Systems for Trucks

3. Air-Brake Systems & Foundation

4. Air-Brake PartsCDL Training

5. Air-Brake System Spring Brakes

6. Air Brake Systems for Trucks

7. Dual Air Brake Systems for Trucks

8. Inspect Air Brake Systems

9. Air Brake Check

10. CDL Air Brake Check for Trucks

11. Use Air Brakes for Trucks

12. Emergency Stops in a Truck

13. Properly Brake on Downgrades

14. Safely Park Truck Low Air

1. Drive Combination Vehicles Safely

2. Steer Gently for CDL

3. Handle Railroad-Highway Crossings

4. Turn Wide with a Trailer

5. Combination Vehicle Air Brakes

6. Trailer Air Lines for CDL

7. Connect Hose Couplers (Glad Hands)

8. Trailer Air Tanks & Brakes

9. Antilock Brake Systems for Trucks

10. Couple & Uncouple Trucks Safely

11. Couple and Uncouple a Truck

12. Safely Uncouple Tractor-Semitrailers

13. Inspect a Combination Vehicle

14. Check Air Brakes on Combos

1. Doubles & Triples Safety

2. Couple & Uncouple Trailers Safely

3. Uncouple Twin & Triple Trailers

4. Inspect Doubles & Triples

5. Check Air Brakes on Doubles/Triples

1. CDL Training: Section 8 Tanks

2. Drive Tank Vehicles Safely

3. Tanker Safe Driving Rules

1. Hazardous Materials Regulations

2. Intent of Hazmat Regulations

3. Hazardous Materials Responsibility

4. Hazmat Communication Rules

5. Placards & Regulated Products

6. Hazardous Materials Table

7. Hazardous Substances & Quantities

8. Fill Out Hazmat Shipping Paper

9. Hazmat Shipping Paper Requirements

10. Recognize Hazardous Materials

11. Placarding for CDL Trucks

12. Load & Unload Hazardous Cargo

13. Load & Unload Hazardous Cargo

14. Loading/Unloading Hazardous Cargo

15. Bulk Packaging Markings, Loading

16. Load/Unload Hazmat Tanks

17. Hazmat Driving & Parking Rules

18. Hazmat Route Restrictions

19. Keep Shipping Papers & Info

20. Respond to Hazmat Emergencies

21. Control Truck Fires & Leaks

22. Respond to CDL Training Hazards

23. Required Notification for CDL

24. Hazardous Materials Glossary

25. Hazmat Glossary

1. CDL School Bus Safety

2. School Bus Loading/Unloading

3. Loading/Unloading for CDL

4. School Bus Unloading

5. Loading/Unloading Dangers

6. Emergency Exit/Evacuation CDL

7. Emergency Evacuation Procedures

8. Railroad-Highway Crossings

9. School Bus/Train Crossings

10. CDL Training: Special Situations

11. Antilock Braking Systems

12. Safely Operate a School Bus

1. CDL Pre-Trip Vehicle Inspection

2. Inspect Vehicle Parts for CDL

3. CDL Training: Cab Check

4. CDL Training: Check Oil Pedals

5. Inspect Steering & Suspension

6. CDL Training: Brake Wheel Checkup

7. Inspect Truck for CDL Training

8. Inspect Tractor & Coupling Lines

9. CDL Drivers: School Bus Inspection

10. Inspect Trailer for CDL Training

11. Inspect Coach/Bus

1. CDL Basic Vehicle Control Skills

2. CDL Training: Exercises & Maneuvers

1. CDL Training On-road Driving

2. On-Road Driving: Intersections

3. CDL Training: On-Road Part 3

4. On-Road Driving: Behaviors

1. Learn Hours of Service Regulations

2. HOS Regulations for Truckers

3. Understanding HOS Regulations

4. On-Duty & Off-Duty Time

5. 14-Hour On-Duty Limit

6. 11-Hour Driving Limit for Trucks

7. Calculating 70-Hour Limit

8. Adverse Driving Conditions/16hr

9. Split-Sleeper-Berth Rule

10. Split Sleeper Provision

11. Calculate Hours with Sleeper Rule

12. Maximize Hours with CDL Tips

1. Weight & Balance Laws for Trucks

2. Weight Transfer for Truck Drivers

3. Limitations of Axle Spacing

4. Scale Truck for CDL Training

5. Position of Trailer Tandems

6. Load Cargo for Axle Balance

7. Calculate Fuel Weight for CDL

8. Calculate Truck Driver Fuel

9. Calc Fuel Burnoff for Trucks

10. Slide 5th Wheel for Training

1. Learn Cargo Securement Fund.

2. Cargo Securement Requirements

3. Learn Securement Systems

4. Learn Containing, Immobilizing

5. Tie-Down Reqs for Trucks

6. Cargo Tie-Downs: Working Load

7. Learn Aggr. Working Load

8. Securement System for Logs

9. Secure Logs Loaded Lengthwise

10. Secure Building Materials

11. Secure Bundles of Lumber

12. Secure Metal Coils in Truck

13. Secure Coils Eyes Crosswise

14. Secure Coils Eyes Lengthwise

15. Secure Coils for Truck Drivers

16. Secure Paper Rolls for CDL

17. Load & Secure Paper Rolls Vert.

18. Secure Paper Rolls Vert. CDL

19. Secure Paper Rolls Horiz.

20. Load & Secure Paper Rolls

21. Cargo Securement for Pipe

22. Reqs. Arrange Concrete Pipe

23. Securing Pipe Inside Diam. 1.143

24. Securing Pipe Inside Diam. 1143

25. Secure Intermodal Containers

26. Secure Autos, Light Trucks, Vans

27. Secure Heavy Vehicles, Equip.

28. Secure Flattened/Crushed Vehicles

29. Secure Roll-On/Roll-Off Hook

30. Secure Large Boulders Tranport

31. Secure Large Boulders CDL

32. Metal Coil Securement CDL

1. Cargo Securement for Trucks

2. Securement Devices & Dunnage

3. Strength Ratings Blocking System

4. Cargo Roll Prevention Training

5. Indirect Tie-Downs for CDL

6. Min. Tie-Downs for Cargo

7. Metal Coil Securement CDL

8. Securement Reqs. for Metal Coils

9. Securement Reqs. for Metal Coils

10. CDL: Learn Cargo Securement

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Section 12: Pre-trip Vehicle Inspection Test

This section covers:

• Internal Inspection
• External Inspection

Class A Pre-trip Inspection Test

If you are applying for a Class A CDL, you will be required to perform a pre-trip inspection of the vehicle you have brought with you for testing. The vehicle must be a combination vehicle, representative of the unit you will drive, and must meet the class weight requirements.

If the vehicle is an air brake vehicle, you must first pass the Air Brake Knowledge test. You also must have passed all applicable endorsement knowledge tests that pertain to the vehicle you bring in for testing.

You will be required to perform one of the four versions of the inspection; you will not know which version until just before testing begins. All the tests include an engine start, in-cab inspection, and inspection of the coupling system.

In addition, your test may include an inspection of the entire vehicle or only a portion of the vehicle which your CDL Examiner will explain to you.

Class B and C Pre-trip Inspection Test

If you are applying for a Class B or C CDL, you will be required to perform a pre-trip inspection of the vehicle you have brought with you for testing. The vehicle must be a representative of the unit you will be driving and must meet the class weight requirements.

You will be required to perform one of the three versions of the inspection; you will not know which version until just before testing begins. All the tests include an engine start and in-cab inspection.

In addition, your test may include an inspection of the entire vehicle or only a portion of the vehicle which your CDL Examiner will explain to you. You will have to inspect any special vehicle features, if applicable.

Taking The Exam

During the pre-trip inspection, you must show that the vehicle is safe to drive. You may have to walk around the vehicle and point to or touch each item and explain to the examiner what you are checking and why. At the time of your test, the examiner will direct you to the areas of the vehicle to inspect for the test. In addition to this section, you should also review Section 2 prior to conducting the pre-trip inspection.

Any Tank vehicle that will be used for the skills/drive testing must be purged of hazardous materials 48 hours prior to testing with documentation verifying the purge. When using a Tank vehicle for the skills tests, the applicant must have passed the Tank Knowledge test, and the tank must be empty.

Multiple-Choice Questions:

Give a brief explanation of the problem:

Optional: Leave your email address if you would like a reply:

During the pre-trip inspection test you must:

• Show that the vehicle is safe to drive
• All these are correct
• Explain to the examiner what you are checking and why
• Walk around the vehicle and point to or touch each item

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Want to pass your CDL Test on your first try? Our CDL Prep Questions can help you get ready for your written exams. Get your CDL test with confidence and ease! Are you gearing up for your CDL (Commercial Driver's Licence) test? Look no further! Our app provides a customised study plan designed around your skills, study schedule, and exam date. Not sure about your test date? You can change your study plan anytime. With our unique readiness score, you'll know exactly when you're ready to succeed and pass the real exam confidently on your first attempt. App Features: - Learn all road signs and their meanings. - Bookmark difficult questions for last-minute preparation. - Prepare for the written commercial driver's licence exam with sample practice tests. - Practice tests designed to simulate the real exam experience. - Practice with over 2500+ questions. - Realistic tests based on the official exam. - Detailed explanations for wrong answers. - New questions each time you practise. - No registration required. - Track your progress and know when you’re ready for the test. - Designed By Industry Experts. This app includes CDL practice test (CDL study guide) for various categories: - Basic Understanding - Pre-Trip Inspection - Air Brakes - Passenger Vehicles - Multiple Trailers - Hazardous Materials - Tanker Vehicles - School Bus - Combination Vehicles You can refer to this app for any of the All US states you are studying for the CDL test: Alabama DPS, Alaska DMV, Arizona MVD, Arkansas OMV, California DMV, Colorado DMV, Connecticut DMV, District of Columbia DMV, Delaware DMV, Florida DHSMV, Georgia DDS, Hawaii DMV, Idaho DMV, Illinois SOS, Indiana BMV, Iowa DMV, Kansas DMV, Kentucky DMV, Louisiana OMV, Maine BMV, Maryland MVA, Massachusetts RMV, Michigan SOS, Minnesota DVS, Mississippi DMV, Missouri DOR, Montana MVD,Nebraska DMV,Nevada DMV,New Hampshire DMV, New Jersey MVC, New Mexico MVD, New York DMV, North Carolina DMV, North Dakota NDDOT, Ohio BMV, Oklahoma DPS, Oregon DMV, Pennsylvania DMV, Rhode Island DMV, South Carolina DMV, South Dakota DMV, Tennessee DOS, Texas DMV, Utah DMV, Vermont DMV, Virginia DMV, Washington DOL, West Virginia DMV, Wisconsin DMV, Wyoming DOT Privacy Policy : https://dmvtest.xyz/CDL/public/privacy Terms of Use : https://dmvtest.xyz/CDL/public/termsOfUse

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