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It is an intelligent form of cruise control that slows down and speeds up automatically to keep pace with the car in front of you. Overall, the future of cruise control technology holds promise for creating a more seamless and enjoyable driving experience, with a focus on safety, comfort, and sustainability. Cruise control offers several benefits to drivers, especially during long road trips or highway driving.
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It even works out how much power the car needs to keep the same speed, for example if you’re driving uphill or downhill. On slippery roads – that includes snow, ice, heavy rain and hailstorms – as this increases the chances of sliding. Kimberlea Buczeke is an automotive expert at RepairPal, the leading online source of auto repair resources and estimates. With many ASE Master certified mechanics on staff who have decades of experience, RepairPal knows all the fine points of car repair. The derivative of these systems is acceleration, which is also closely monitored. Cruise control systems monitor current acceleration, reacting to changes in speed.
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Adaptive cruise control improves upon conventional cruise systems by not only maintaining a preset speed, but also by automatically keeping a safe distance between your car and the vehicle in front of it. Using forward-pointed sensors, cameras, or both, adaptive cruise control maintains your preset speed while constantly monitoring the vehicle in front of you. However, the kicker is, it automatically slows and accelerates to maintain a predetermined following distance. More sophisticated adaptive cruise control systems can bring your car to a full stop If necessary.
Come up to speed
In this post, we'll explore how cruise control works, its benefits, and how to use it safely to make your driving experience more comfortable. The cruise control takes its speed signal from a rotating driveshaft, speedometer cable, wheel speed sensor from the engine's RPM, or internal speed pulses produced electronically by the vehicle. Most systems do not allow the use of the cruise control below a certain speed - typically around 25 or 30 mph (40 or 48 km/h). 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.
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Adaptive Cruise Control (ACC)
It’s designed to help reduce driver fatigue in stop-start traffic. By now, you may have picked up on a potential drawback of cruise control — keeping a steady speed is harder to do (and possibly dangerous) when there are other drivers in front of you. In terms of mechanical speed control, an actuator is employed to which a cable is connected. This setup actuates the throttle valve, effectively performing the same job as you would if you depressed the gas pedal with your foot. Another component is the speed control module, effectively the "brains" behind the system that remembers the desired speed.
Even more advanced systems will automatically get your vehicle moving again once the car ahead travels forward, though sometimes with the tap of the gas pedal. To engage cruise-control, you usually activate the system by pressing buttons on your steering wheel. You can then set your desired speed, adjust it within the system, and deactivate it when needed.
You just set the speed you want, and it'll keep your car cruising along at that speed, no problem. It's perfect for those long drives on open highways, but it doesn’t automatically react to other cars on the road. Most cruise control systems allow us to make adjustments without deactivating the system.
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To use cruise control safely, it’s best to know when you should and shouldn’t use it. [9] Using cruise control on the highway makes your driving more predictable to other drivers. Instead of constantly changing speeds, cars know how fast you’re driving and can follow safely behind you or pass. Cruise-control is most effective during extended journeys on expansive, straight highways, such as interstate highways, where vehicles are maintaining a relatively steady pace. It is not suitable for use in stop-and-go traffic, inclement weather conditions like snow, ice, or heavy rain, or on narrow, winding roads with frequent changes in speed limits. Disengaging cruise control in these scenarios could require significant time and attention, potentially leading to accidents.
Moreover, on rough or loose terrain, the system may struggle to maintain control. Another drawback is that relying on cruise control can encourage drivers to pay less attention to the road, increasing the risk of accidents. Additionally, adaptive cruise control provides a button to establish the minimum distance it will accept before responding to the slowing or stopped car in front of it. Usually, the factory offers three or four choices from which you can pick. A graphic on the driver information screen displays a representation of the changing minimum distances as you use the button to scroll through them.
The steering-wheel controls for some systems have buttons or toggles with labels like “Accel” and “Decel,” while others simply use up-and-down arrows to signify a button’s function. We recommend consulting your car’s owner’s manual to decode the cruise control buttons and their operation for your specific vehicle. Here’s a list of the driver-operated functions provided by the cruise control buttons and toggles.
Since a signal from the brake pedal can cancel the cruise control, it would not be feasible for the cruise to be able to set if the brake light couldn’t signal cruise control to turn off. One minute you’re driving your car and everything seems fine, and the next moment you hear a strange noise coming from your car as you accelerate. Another inventor named Harold Exline, working independently of Riley, also invented a type of cruise control that he first installed on his car and friends' cars. 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).
If the cruise control on your car fails to disengage when you want to slow down, slip the vehicle into neutral to disconnect drive power from the wheels, pull over, and address the situation. Your vehicle’s engine, transmission and other components are designed to work hand-in-hand with its cruise control system and are extensively tested and integrated with one another for trouble-free performance. Notably, a laser-based sensor can struggle during storms or other periods of low visibility. Another type is binocular computer vision systems, where tiny cameras installed on the back of the rearview mirror can pick up on objects ahead of your car. A burnt out brake light can cause the cruise control to not set.
You can turn it on, set your preferred speed, (under the speed limit, right?) and just cruise. You don’t have to worry about maintaining your speed, and you can enjoy a smooth driving experience. In the right circumstances, it can potentially enhance your driving experience by reducing fatigue, increasing safety and improving fuel efficiency. One of the main advantages of using cruise control is improved fuel efficiency. By maintaining a constant speed, cruise control helps reduce fuel consumption, leading to better gas mileage. Rapid acceleration and deceleration, on the other hand, can lead to increased fuel consumption.
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