Automatic guidance system for vehicle in traffic congestion performs left-right steering and distance maintenance, while giving driver priority to override automatic functions

摘要

The system takes over left-right guidance using automatic steering control, and also maintains a defined distance to the vehicle in front. The latter function requires an adaptive drive- and braking control with stop and go functions. Selection and decision devices (5,6,7,8,9) are provided which select control parameters and controller types, e.g. follow guidance in accordance with traffic lane markings detected by a video camera or a detected vehicle in front. The system is divided in to hierarchical stages (I-IV). The driver is always placed in the monitoring and adaptation loop for upper stage (IV) of the hierarchy, so that he has the highest priority and can override the system at any time.