Description

A fully integrated navigation system installed as an option, employs visual displays and voice commands to provide various types of route guidance information to the driver. Using signals from the global positioning satellite (GPS) system together with terrestrial map data, vehicle road speed and yaw rate, the system calculates the position of the vehicle to an accuracy of a few meters.

Following receipt of information on the desired destination and selected route, the system provides both visual and/or voice instructions as progress is made along that route. In the event of deviation from the original route, the navigation system determines vehicle position and revises the route accordingly.