Adaptive Speed Control And Adaptive Speed Control Plus

NOTE: The system is intended for use in limited driving situations, does not remove control and responsibility from the driver.

The adaptive speed control system is controlled by an Adaptive Speed Control Module (ASCM).

The adaptive speed control system uses a forward looking radar sensor to scan the road ahead. The adaptive speed control system is looking for objects that are moving at a different speed than the sensing vehicle. When a target is identified the adaptive speed control system will monitor the time gap between the host and the target vehicles.

When the time gap falls below a set driver selected level, the speed control system will intervene. The speed control system will slow the vehicle until the correct time gap is attained. The driver can choose between 4 time gap settings. The chosen setting is displayed in the Instrument Cluster (IC).

The system will detect but not react to the following:

Stationary vehicles
Pedestrians
Vehicles in the oncoming lane.

For the adaptive speed control plus system the radar shares object detection data with the Image Processing Module (IPMA). This improves the tracking and classification of vehicles and other targets, for instance detection of vehicles changing lanes and stopped vehicles. The system will therefore bring the car to a halt behind stopped vehicles in low speed queuing, for instance at multi-lane traffic lights. The system will not brake for stationary vehicles when traveling above 27 km/h (15 mph). If the camera is not available the system will continue to operate on radar data only.

The adaptive speed control plus system allows the following additional features:

Auto resume (no pedal press required) if the lead car moves off within 3 seconds of stopping.
Driver warning if a pedestrian is detected within 1 meter in front of the vehicle during the restart.
Automatic engine restart during queue assist when the vehicle ahead moves off.
Update of the adaptive speed control warning indicator with lead car position display.

Adaptive speed control is active at a minimum set speed of 20 km/h (13 mph) and a maximum of up to 200 km/h (124 mph) or 10 km/h (6 mph) below the declared maximum vehicle speed, whichever is lower. Adaptive speed control only functions when a set speed is entered in the system operating the 'SET+' switch on the right steering wheel switchpack. The adaptive speed control system only intervenes with the set speed when it detects a target vehicle.

The speed control system reduces the speed:

If the minimum time gap is breached.
If the speed control system calculates that the time gap will be breached.

It is important to note that the system is intended for use in limited driving situations, does not remove control and responsibility from the driver. That means the system can be quickly overridden at all times. The adaptive speed control system is not a collision warning system and will not react to stationary objects. The system is best suited to main roads/highways with gradual bends.

The adaptive speed control system also uses the Anti-lock Brake System (ABS) control module.