Adaptive Cruise Control (ACC) is an advanced technology that automatically maintains a preset driving speed, while adjusting the speed to keep a safe distance from the vehicle in front.
“ACC is a major step toward autonomous driving, reducing rear-end crashes by 20 percent,” said Dr. Sven Beiker, executive director at Stanford University’s Center for Automotive Research.
This system operates based on radar or laser sensors, continuously scanning the road ahead to monitor traffic conditions, thereby automatically adjusting the vehicle's speed flexibly.
ACC offers convenience and safety when driving, especially on highways, but has the disadvantage of being inconsistent between vehicle models and limited in bad weather.
Although considered safe, using ACC requires the driver to fully understand the system and always maintain control of the vehicle to ensure optimal safety.
Let's learn more in the article to better understand ACC, one of the outstanding technological solutions in the automotive industry today.
Adaptive Cruise Control (ACC) is an advanced cruise control technology that enhances the driving experience and ensures safety.
ACC is capable of automatically adjusting speed based on the traffic situation ahead. This means the vehicle can dynamically slow down or speed up to maintain a safe distance from the vehicle in front.
ACC is also known by other names such as automatic cruise control, active cruise control, intelligent cruise control, or Radar cruise control.
This technology is often integrated with radar sensors and cameras to continuously monitor traffic conditions, helping drivers reduce stress on long trips or in heavy traffic conditions.
According to a 2019 study by the US Highway Safety Research Institute (IIHS), using ACC can reduce rear-end collisions by 50% compared to not using it.
The structure of the ACC system includes the following main parts:
Distance sensor: The ACC system uses radar sensors operating in the 76 to 77 GHz frequency range to measure the distance from the front of the vehicle to the object in front, with an operating range of up to 200m.
Network architecture: ACC does not operate independently but depends on many subsystems such as engine control, electronic balance. The ACC controller integrates in the sensor, collects and transmits data via CAN network to other control devices on the vehicle.
Management system with 3 modules:
Adaptive Cruise Control (ACC) works by using sensors such as radar or lasers mounted on the vehicle to continuously scan the road ahead to monitor vehicles in its path. This allows ACC to automatically adjust the vehicle's speed to maintain a safe distance from the vehicle in front.
How to activate and use the ACC system as follows:
After setting the speed, the driver can adjust the safe distance from the vehicle in front using the setting button. This distance is usually measured in time (a few seconds) or physical distance (a few meters), depending on the system of each vehicle.
ACC response:
Adaptive cruise control (ACC) has the advantage of supporting safe driving and reducing stress on the highway, but is limited by inconsistency between vehicle models and poor performance in bad weather conditions.
ACC is highly appreciated for its ability to maintain safe distances and high efficiency on highways and urban areas:
A 2021 report by the US National Highway Traffic Safety Administration (NHTSA) indicates that more than 60% of US consumers trust ACC technology and want it equipped in their vehicles.
ACC has limited uniformity and performance is dependent on weather.
Adaptive Cruise Control (ACC) is considered safe to use by experts, thanks to its ability to automatically adjust speed and maintain a safe distance. However, drivers need to understand how the system works on their car because each car manufacturer has different designs and features.
It is important that the driver always maintains control of the speed and condition of the vehicle in all situations, not completely relying on self-driving technology. Understanding and using it properly will help ACC maximize its safety effectiveness.
Cruise control maintains a fixed speed that the driver has set, without changing when encountering a vehicle in front. Meanwhile, adaptive cruise control (ACC) is capable of automatically slowing down or increasing speed based on the distance to other vehicles, providing more safety and convenience.
Yes, maintaining a steady speed with ACC can improve fuel economy, especially on the highway. Additionally, keeping the vehicle at a safe speed also reduces the risk of getting a speeding ticket.
If you drive frequently on the highway or are interested in safety technology, adaptive cruise control (ACC) is an option worth considering. However, keep in mind that ACC-equipped vehicles tend to cost more, and consider how often you use the system to ensure it is cost-effective.
Common safety systems on cars includes: adaptive cruise control, ABS braking system, ESP electronic balance system, hill start assist system, airbag system, blind spot warning system, collision warning system and automatic emergency braking.
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