Adaptive Cruise Control (ACC)
Adaptive Cruise Control (ACC) is a driver assistance system that assists drivers, to guarantee safe and comfortable stop & go driving with full deceleration capabilities, by automatically controlling the brake and throttle. As a driver assistance system, this feature adjusts the speed to maintain a safe distance from a vehicle ahead, or maintains the set speed, whichever speed is lower. The feature is also able to reduce the vehicle's speed in front of and in bends, to enable the bend to be taken at a safe and comfortable speed. When the vehicle has stopped due to the vehicle ahead also having stopped, the driver needs to manually confirm continuation after a stop of 3 seconds or more.
- If the vehicle ahead is not moving, the ACC system will remain in holding state for up to 10 minutes.
- If the time is between 3 seconds and 10 minutes, and there is a vehicle ahead, the driver can re-start by using resume button or tapping on the gas pedal.
- If the holding time is between 3 seconds and 10 minutes, and there is NO vehicle ahead, the driver has to press the gas pedal until vehicle reaches 30 km/h in order to reactivate ACC.
- If the holding time is more than 10 minutes, the electronic parking brake will be applied, and if there is a vehicle ahead, the driver has to release the electronic parking brake and/or press the gas pedal to release the parking brake. The driver can then reactivate ACC.
- If, after a holding time of 10 minutes, the ACC system is deactivated, and there is NO vehicle ahead, the driver needs to release the parking brake and/or press the gas pedal until the vehicle's speed is 30kph in order to reset ACC.
The driver must supervise the system under all conditions, and must be available to take control of the longitudinal control. The driver is solely in control of the steering wheel.
System architecture for ACC
HMI state flow for ACC
Speed Adaptation System Components:
- Mid-range radar
- Steering wheel control locations
- HMI
- ADAS
Technical Description: