cruise control switch in car

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How to Use Cruise Control on a Car

Last Updated: February 20, 2024 Fact Checked

This article was co-authored by Simon Miyerov . Simon Miyerov is the President and Driving Instructor for Drive Rite Academy, a driving academy based out of New York City. Simon has over 8 years of driving instruction experience. His mission is to ensure the safety of everyday drivers and continue to make New York a safer and efficient driving environment. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed 478,769 times.

Many cars come with cruise control systems, a great feature that will automatically keep a car driving at a set speed. This gives your feet a rest, and helps you save gas and avoid speeding tickets. Familiarize yourself with your car's cruise control switches, located on or near the steering wheel. Make sure to use cruise control only in safe conditions, and to stay focused on the road. Once you know how to operate cruise control, you're ready for a comfortable, efficient drive!

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Operating Cruise Control

• Check your car's operating manual if you are unable to find the cruise control switches.

• Many cars have additional buttons to increase or decrease speed (marked by a +/-) when using cruise control.

• For some car models, cruise control will not operate below a certain speed, such as 40 miles (64 km) per hour.

• To stop cruise control briefly (such as when a car in front of you brakes), just press the brake as you normally would.
• If you are driving a manual, you can also disengage cruise control by pressing the clutch.
• If you are completely done using cruise control, you can press the “OFF” or "ON/OFF" switch.
• If your car has a cruise control “CANCEL” switch, you can also press that to stop it.

• If your car has a +/- button for cruise control, press this when you want to raise or lower your car's speed.

Using Cruise Control Safely and Efficiently

• Using cruise control on busy streets can also be dangerous. Since you yourself are not in complete control of your car, you may be paying less attention. You might brake or react to other cars more slowly than normal, increasing the chance of an accident.

• Wet or snowy roads
• Hilly, steep, or mountainous areas
• Winding roads

Expert Q&A

You Might Also Like

• ↑ Simon Miyerov. Driving Instructor. Expert Interview. 4 December 2019.
• ↑ https://www.youtube.com/watch?v=jKtBSFoAYlg
• ↑ http://www.thecarexpert.co.uk/cruise-control/

About This Article

If you want to use cruise control on your car, make sure you're on the open road, such as a freeway or highway. Additionally, avoid using cruise control in rainy or snowy conditions, or if you're driving through a city, since you'll need to change speed and turn regularly. When you're ready to switch to cruise control, press the "Set" switch, which is usually found on the steering column or on the wheel, when your car reaches the desired speed. To stop cruise control, press on the brake or push the clutch if you're driving a manual car. To learn when to avoid using cruise control and how it can help you save on fuel, read on! Did this summary help you? Yes No

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Cruise Switches

At The Cruise Control Store, we’re proud to offer after market cruise control kits, but if you need just the cruise control switch, we have those too. We offer an array of different universal switches, so no matter what type of vehicle you drive, you’ll be able to find just what you need in our inventory.

Why Choose a Cruise Control Switch from Us?

At The Cruise Control Store, we offer an inventory with an array of products to suit many different needs. For instance, one car from GM will require a different cruise control switch than a similar car from Ford. For that reason, we offer many different types of cruise control switch, including brushed aluminum and polished aluminum, left-side mount and right-side mount, adjustable switches, and universal switches. Depending on what type of vehicle you drive, we at The Cruise Control Store will be able to recommend a certain cruise control switch that will be most compatible with your vehicle.

About The Cruise Control Store

For more than 25 years, we have provided aftermarket cruise control kits for a number of different makes, including Ford, Honda, GMC, Mitsubishi, Nissan, Toyota, Jeep, and more. Our cruise control switch selection also offers our customers a number of choices. For more information about adding cruise control to your vehicle, contact us today.

250-2867 Rostra cruise switch with Speed Limiter + Memory

Brushed aluminum Cover for 250-3020 / 3026 cruise switch

Polished aluminum Cover for 250-3020 / 3026 cruise switch

250-3026 Gm style Cruise Switch 1978-1984 No Wiper Control

250-3357 GM With Delay Wipers Cruise Control Switch

250-3020 Early Model GM Column Cruise Control Switch

250-3032 "Cut Off" Universal Cruise Control Switch

250-3421 Universal Left Mount Column Cruise Control Switch

250-3593 Universal Cruise Control Switch Dash Mount Without Engage light

250-3592 Universal Cruise Control Switch Dash Mount With Engage light

250-3743 Universal Cruise Control Switch Column Mount Right Side

250-3742 Universal Cruise Control Switch Column Mount Left Side

The 250-2867 cruise control switch is the control switch included in Rostra's "NS" kits. This switch cannot be used on non "NS" kits. It is for replacing a defective ONLY.  

This is a brushed aluminum cover for the 250-3020 cruise switch. This part is also offered in a polished alumninum finish. Please choose the correct option for your interior trim.

This is polished aluminum cover for the 250-3020 cruise switch. This part is also offered in a brushed alumninum finish. Please choose the correct option for your interior trim.

The 250-3026 is a GM style cruise control switch that is applicable to some 1978-1984 vehicles. If you have a lever that removes from the column by simply pulling it outwards, and has no wiper controls, this is the switch you need. Not compatible with...

The 250-3357 cruise switch is designed to replace your original turn signal lever with delay wiper control only when using the Rostra Universal Cruise Control. Please call with any questions regarding application.  *** WILL  NOT REPLACE YOUR...

The 250-3020 cruise control switch is applicable to early model GM columns. If the end of your rounded GM turn signal is flat, and is held in by a single set screw, then this may be the switch you need. Please call for application questions. This switch...

The 250-3032 is a universal cruise control switch that mounts to the vehicles existing turn signal lever. You will have to sever the end of the original turn signal lever, and slide the 3032 over the original turn signal shaft. To be used in conjunction...

The 250-3421 is a universal cruise control switch that mounts to the plastic shroud that surrounds the steering column, on the left hand side. It has an on/off, set and resume button. It is a "closed circuit" control switch designed to be used...

This is a universal cruise control switch that flush mounts on your dash or any flat surface. It has an on/off, set and resume button. This switch has a backlighting circuit that you can interface into the vehicles backlighting, or wire directly to...

This is a universal cruise control switch that flush mounts on your dash or any flat surface. It has an on/off, set and resume button as well as an "engage light". When connected to the 250-1223's engage output ( relay required, not included ) the light...

This is a universal cruise control switch that mounts on the right hand side of the steering column. It attaches to the plastic shroud that surrounds the column. The 250-3743 has a green L.E.D on/off indicator light as well as separate on/off,...

This is a universal cruise control switch that mounts on the left hand side of the steering column. It attaches to the plastic shroud that surrounds the column. The 250-3742 has a green L.E.D on/off indicator light as well as separate on/off, set...

© 2024 The Cruise Control Store Powered by BigCommerce All rights reserved. | Sitemap

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How to Use Cruise Control Safely

Everything you need to know for safe, stress-free driving with your car's cruise-control system.

Its Job Is to Maintain Speed

Cruise control's primary function is to maintain the speed of your choosing, relieving you of needing to keep your foot on the throttle. Virtually all cars on the road today rely on an electronic control module—a computer—to monitor the vehicle's speed and to readjust it as needed to hold the speed you've chosen regardless of the road's gradient.

Know the Controls

You operate cruise control by either a stalk on the steering column or several buttons on the steering wheel. These include an on-off switch; a "set" button to select the speed you want the car to maintain; and buttons or switches marked "+" and "—" that increase or decrease the speed after it has been set, often in 1-mph increments. A "cancel" button disengages the cruise-control system without shutting it off entirely, allowing the car to coast. (Cars with stalk-operated cruise control have a "cancel" position that you move the stalk to in order to disengage the system.) A "resume" function or button brings the car back to its previously set speed. Braking or depressing the clutch at any time will also cancel cruise control. Should you need to make a quick pass, you can always override the preset speed by simply pressing down further on the gas pedal.

Adaptive Cruise's Added Features

Many newer cars offer what's known as adaptive cruise control, sometimes also called active cruise. It works in the same way as conventional cruise systems and additionally relies on front-mounted radar , cameras, or sensors to detect the presence of vehicles directly ahead in your lane. This enables adaptive cruise-control systems to maintain a set distance from the vehicle in front no matter how it varies its speed.

Adaptive systems allow you to adjust how closely your vehicle follows the one ahead but are programmed so that they always maintain at least a safe minimum following distance. Some of these systems also have the ability to brake and even come to a complete stop in city traffic and, depending on the vehicle, automatically accelerate without the driver pressing the gas pedal when traffic starts to move again.

Semi-Autonomous Cruise Control

Finally, the newest, most advanced cruise control systems, such as such as Nissan ProPilot Assist, Subaru EyeSight, and Audi Traffic Jam Assist, are semi-automated driving assistants that combine adaptive cruise control with lane-keeping assist, which self-steers the car gently to keep it in lane if you let it wander out—although you can only take your hands off the wheel for a few seconds before the system sounds alarms and then shuts off.

.css-1rvrtxn{font-family:Gliko,Gliko-fallback,Gliko-roboto,Gliko-local,Georgia,Times,Serif;font-size:1.625rem;line-height:1.2;margin:0rem;-webkit-text-decoration:underline;text-decoration:underline;text-decoration-color:#DBCA8B;text-decoration-thickness:0.25rem;}@media(max-width: 48rem){.css-1rvrtxn{font-size:2.25rem;line-height:1.1;}}@media(min-width: 48rem){.css-1rvrtxn{font-size:2.625rem;line-height:1.1;}}@media(min-width: 64rem){.css-1rvrtxn{font-size:3rem;line-height:1.1;}}.css-1rvrtxn b,.css-1rvrtxn strong{font-family:inherit;font-weight:bold;}.css-1rvrtxn em,.css-1rvrtxn i{font-style:italic;font-family:inherit;} No matter what type of cruise control your car has, the rules for using it safely are the same.

Most of these systems also can autonomously negotiate only the most gentle curves on the interstate. Some semi-autonomous systems, such as those from Tesla and Mercedes-Benz , can do more, including steering the car into the adjacent lane while keeping enough distance from other cars.

Follow These Safety Rules

No matter which type of cruise control your car has, the guidelines for using it effectively and safely are the same:

• Always remain alert and aware of other traffic, and be ready to take control and brake or steer around obstacles, inattentive drivers, or emergency situations.
• Think of even the most advanced adaptive and semi-autonomous cruise control systems as "dumb." They are programmed by humans and may react unpredictably in certain, unforeseen conditions. (See previous point: "remain alert.") Rain, snow, and fog can obscure radar signals and confuse cameras or sensors, sometimes disabling adaptive cruise control entirely. As with conventional cruise control, with an advanced cruise system you must always be prepared to take full control at a moment's notice.
• Cruise control is still best suited for use on highways and in light traffic. If your vehicle has conventional (not adaptive) cruise control, be sure to leave adequate spacing between your car and those ahead, and be prepared to disengage the system by braking or tapping "cancel" as you creep up on other vehicles or get into heavy traffic.
• Do not use cruise control in slippery conditions, including snowy or icy roads or rain-soaked roads awash in deep puddles. Most cruise systems will attempt to maintain your speed until you intervene, and on slippery roads that could cause you to momentarily lose traction, upsetting the car and potentially precipitating an accident.

Treat cruise control as a simple labor-saving convenience, however—but one that must be monitored—and you'll enjoy many miles of comfortable, stress-free travel.

Clifford Atiyeh is a reporter and photographer for Car and Driver , specializing in business, government, and litigation news. He is president of the New England Motor Press Association and committed to saving both manuals and old Volvos.

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How Cruise Control Systems Work

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Cruise control is an invaluable feature on Ameri­can ­cars. Without cruise control, long road trips would be more tiring, for the driver at least, and those of us suffering from lead-foot syndrome would probably get a lot more speeding tickets.

­Cruise control is far more common on American cars than European cars, because the roads in America are generally bigger and straighter, and destinations are farther apart. With traffic continually increasing, basic cruise control is becoming less useful, but instead of becoming obsolete, cruise control systems are adapting to this new reality -- soon, cars will be equipped with adaptive cruise control, which will allow your ­car to follow the car in front of it while continually adjusting speed to maintain a safe distance.

In this article, we'll learn how a conventional cruise control system works, and then we'll take a look at adaptive cruise control systems that are under development.

What Cruise Control Does

Cruise control acceleration and deceleration, controlling the cruise control, adaptive cruise control.

The cruise control system actually has a lot of functions other than controlling the speed of your car. For instance, the cruise control pictured below can accelerate or decelerate the car by 1 mph with the tap of a button. Hit the button five times to go 5 mph faster. There are also several important safety features -- the cruise control will disengage as soon as you hit the brake pedal, and it won't engage at speeds less than 25 mph (40 kph).

The system pictured below has five buttons: On, Off, Set/Accel, Resume and Coast. It also has a sixth control -- the brake pedal, and if your car has a manual transmission the clutch pedal is also hooked up to the cruise control.

• The on and off buttons don't actually do much. Hitting the on button does not do anything except tell the car that you might be hitting another button soon. The off button turns the cruise control off even if it is engaged. Some cruise controls don't have these buttons; instead, they turn off when the driver hits the brakes, and turn on when the driver hits the set button.
• The set/accel button tells the car to maintain the speed you are currently driving. If you hit the set button at 45 mph, the car will maintain your speed at 45 mph. Holding down the set/accel button will make the car accelerate; and on this car, tapping it once will make the car go 1 mph faster.
• If you recently disengaged the cruise control by hitting the brake pedal, hitting the resume button will command the car to accelerate back to the most recent speed setting.
• Holding down the coast button will cause the car to decelerate, just as if you took your foot completely off the gas. On this car, tapping the coast button once will cause the car to slow down by 1 mph.
• The brake pedal and clutch pedal each have a switch that disengages the cruise control as soon as the pedal is pressed, so you can shut off the cruise control with a light tap on the brake or clutch.

The cruise control system controls the speed of your car the same way you do -- by adjusting the throttle position . But cruise control actuates the throttle valve by a cable connected to an actuator , instead of by pressing a pedal. The throttle valve controls the power and speed of the engine by limiting how much air the engine takes in (see How Fuel Injection Systems Work for more details).

In the picture above, you can see two cables connected to a pivot that moves the throttle valve. One cable comes from the accelerator pedal, and one from the actuator. When the cruise control is engaged, the actuator moves the cable connected to the pivot, which adjusts the throttle; but it also pulls on the cable that is connected to the gas pedal -- this is why your pedal moves up and down when the cruise control is engaged.

Many cars use actuators powered by engine vacuum to open and close the throttle. These systems use a small, electronically-controlled valve to regulate the vacuum in a diaphragm. This works in a similar way to the brake booster , which provides power to your brake system.

The brain of a cruise control system is a small computer that is normally found under the hood or behind the dashboard. It connects to the throttle control seen in the previous section, as well as several sensors. The diagram below shows the inputs and outputs of a typical cruise control system.

A good cruise control system accelerates aggressively to the desired speed without overshooting, and then maintains that speed with little deviation no matter how much weight is in the car, or how steep the hill you drive up. Controlling the speed of a car is a classic application of control system theory . The cruise control system controls the speed of the car by adjusting the throttle position, so it needs sensors to tell it the speed and throttle position. It also needs to monitor the controls so it can tell what the desired speed is and when to disengage.

The most important input is the speed signal; the cruise control system does a lot with this signal. First, let's start with one of the most basic control systems you could have -- a proportional control .

In a proportional control system, the cruise control adjusts the throttle proportional to the error, the error being the difference between the desired speed and the actual speed. So, if the cruise control is set at 60 mph and the car is going 50 mph, the throttle position will be open quite far. When the car is going 55 mph, the throttle position opening will be only half of what it was before. The result is that the closer the car gets to the desired speed, the slower it accelerates. Also, if you were on a steep enough hill, the car might not accelerate at all.

Most cruise control systems use a control scheme called proportional-integral-derivative control (a.k.a. PID control). Don't worry, you don't need to know any calculus to make it through this explanation -- just remember that:

• The integral of speed is distance.
• The derivative of speed is acceleration.

A PID control system uses these three factors -- proportional, integral and derivative, calculating each individually and adding them to get the throttle position.

We've already discussed the proportional factor. The integral factor is based on the time integral of the vehicle speed error . Translation: the difference between the distance your car actually traveled and the distance it would have traveled if it were going at the desired speed, calculated over a set period of time. This factor helps the car deal with hills, and also helps it settle into the correct speed and stay there. Let's say your car starts to go up a hill and slows down. The proportional control increases the throttle a little, but you may still slow down. After a little while, the integral control will start to increase the throttle, opening it more and more, because the longer the car maintains a speed slower than the desired speed, the larger the distance error gets.

Now let's add in the final factor, the derivative . Remember that the derivative of speed is acceleration. This factor helps the cruise control respond quickly to changes, such as hills. If the car starts to slow down, the cruise control can see this acceleration (slowing down and speeding up are both acceleration) before the speed can actually change much, and respond by increasing the throttle position.

Two companies are developing a more advanced cruise control that can automatically adjust a car's speed to maintain a safe following distance. This new technology, called adaptive cruise control , uses forward-looking radar , installed behind the grill of a vehicle, to detect the speed and distance of the vehicle ahead of it.

Adaptive cruise control is similar to conventional cruise control in that it maintains the vehicle's pre-set speed. However, unlike conventional cruise control, this new system can automatically adjust speed in order to maintain a proper distance between vehicles in the same lane. This is achieved through a radar headway sensor , digital signal processor and longitudinal controller . If the lead vehicle slows down, or if another object is detected, the system sends a signal to the engine or braking system to decelerate. Then, when the road is clear, the system will re-accelerate the vehicle back to the set speed.

The 77-GHz Autocruise radar system made by TRW has a forward-looking range of up to 492 feet (150 meters), and operates at vehicle speeds ranging from 18.6 miles per hour (30 kph) to 111 mph (180 kph). Delphi's 76-GHz system can also detect objects as far away as 492 feet, and operates at speeds as low as 20 mph (32 kph).

Adaptive cruise control is just a preview of the technology being developed by both companies. These systems are being enhanced to include collision warning capabilities that will warn drivers through visual and/or audio signals that a collision is imminent and that braking or evasive steering is needed.

For more information on cruise control, check out the links below.

Cruise Control FAQ

How does cruise control work, how does adaptive cruise control work, will adaptive cruise control stop the vehicle, when would you use cruise control, how useful is cruise control, lots more information, related articles.

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