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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 2024 Hyundai Elantra and 2024 Toyota Corolla are old rivals in affordable compact cars.
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Life has many roads. Your weekly Navigator is just a click away.
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. It's like having an extra set of eyes on the road, making highway driving a breeze.
What is adaptive cruise control?
Adaptive cruise control is a part of an advanced driver assistance system. If the road surface is snowy, icy, slushy or very wet, you’ll want to think twice about switching your cruise control on. With cruise control, your vehicle will maintain a steady speed when the system is set. When traffic slows down or comes to a stop, the Stop-and-Go Cruise Control system automatically applies the brakes to bring the car to a complete stop. When the traffic ahead starts moving again, the system automatically accelerates the car to follow the flow of traffic.
Come up to speed
This modern feature uses sensors and radar to maintain a safe distance from the vehicle ahead, adjusting speed automatically. It’s an electrical system that allows you to set your car to a specific speed and take your foot off the accelerator. The car also sports another set of eyes in the form of a standard camera that points through the windscreen. This also looks out for nearby hazards, such as pedestrians, cyclists and other motorists, whilst also reading road signs and detecting traffic lights. The bumper-mounted radar, which is already used in autonomous cruise control, looks out for vehicles in front of and behind the car. You just set the speed you want, and it'll keep your car cruising along at that speed, no problem.
Then, when the road is clear, the system will re-accelerate the vehicle back to the set speed. Cruise control is a system that allows the driver to set their car to drive at a specific speed. The driver selects the speed, then takes their foot off the accelerator, and the vehicle will cruise at the set speed.
Due to the road gradient, an additional opposing force will act on the vehicle, which will cause a slowdown. In this case, the driver didn’t adjust the engine torque (input) function of vehicle speed drop (output), or road gradient (disturbance). The system uses radar sensors to calculate the speed and distance of the car ahead.
Traffic Safety is Crucial to Your Business
In heavy traffic, on winding roads, going downhill and when approaching a bridge. Constantly accelerating and braking will use significantly more fuel than maintaining a set speed. Cruise control is an electronic system that enables you to fix a vehicle’s accelerator on a specific speed, so you can take your foot off the pedal. For example, some cars have a combined button to set the initial speed and accelerate. Others have fine-tuning buttons that you can click to increase or decrease your speed by a set amount, often one mph.
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. 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. Stop-and-Go Cruise Control is an advanced form of speed control, Unlike other types of cruise controle systems.
Some manufacturers include three settings, while others can have up to five. If you have ACC, the car will automatically brake and accelerate to keep the correct distance while generally maintaining your set speed when possible. Once the cruise control system is activated, the driver can adjust the speed using speed control buttons. These buttons allow the driver to increase or decrease the set speed in small increments. By pressing the appropriate button, the driver can fine-tune the desired speed for their comfort and road conditions.
It can maintain a safe distance from the vehicle ahead, even in stop-and-go traffic. This type of cruise controle is designed to help drivers reduce stress and fatigue when driving in heavy traffic conditions. The system uses sensors and cameras to detect the distance and speed of the vehicle ahead. This type of cruise control automatically adjusts the speed of the vehicle to maintain a safe following distance and can even bring the vehicle to a complete stop if necessary.
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Picture it like a synchronized dance on the highway, where every car knows its place and keeps the right distance. Cruise control is a feature allowing the driver to set a predetermined speed, which the system’s computer maintains until the driver adjusts the speed, taps the brake, or disengages the system. In other words, once set, the cruise control system automatically controls vehicle speed, relieving the driver of that responsibility. Adaptive cruise control uses sensors around the vehicle’s exterior to maintain speed while keeping a safe following distance from the car ahead.
Sometimes you may get confused between cruise control and speed limiter as both are related to the car's speed. Refer to the table below to understand the difference between both the systems. You may install an aftermarket kit if it’s an old car that does not rely on electronics to control all the engine-related functions.
The system will slow you down and speed you up as the flow of traffic fluctuates throughout your commute, removing a lot of the stress from daily driving. However, adaptive cruise control may not work well in bad weather or protect you from sudden movements, so you will want to always keep your full attention on the road. This means that the vehicle speed is no longer controlled by the driver, through the accelerator pedal position, but by the engine control module. The cruise control function keeps a predefined vehicle speed (set by the driver) regardless of the road conditions, by adjusting the engine torque.
Some systems can also detect pedestrians, animals, or other obstacles and apply the brakes if necessary. Cruise control can become dangerous if the driver becomes too reliant on it and fails to remain attentive. Additionally, using cruise control in hazardous conditions, such as heavy traffic or inclement weather, can be dangerous. If your vehicle experiences erratic speed changes with cruise control engaged, this could indicate a problem with the throttle control system or the vehicle’s computer system. These complex issues generally require professional diagnostics and repair. Remember, these systems are here to make your drive smoother and safer, but they're not a replacement for your attention.
Due to the fact that the input (engine toque) wasn’t adjusted function of the vehicle speed or road gradient, the system’s response was affected. This can be seen as an open loop, where the driver didn’t adjusted the accelerator position in order to keep a constant vehicle speed. The control loop is open because there is no dependency between the input and the output. Another example of open loop control systems is a vehicle driving on a road. In this case we’ll consider that the input is the engine torque, the system is the vehicle itself and the output is the vehicle speed.
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