Vehicle navigation system with speech - calculates location at which spoken guidance information is given in dependence on vehicle situation
摘要
The vehicle navigation system includes a memory (10) for storing route information necessary to reach a target destination. The route information includes turn location data which is used for spoken route guidance. The present motion situation of the vehicle is detected (12) and used to calculate (26) the location at which route information will be given, before the turning is reached. The motion situation of the vehicle includes information about the number of lanes in the road, width of the road, road junctions, and the speed of the vehicle. USE/ADVANTAGE - For motor vehicle. Timing of spoken information depends on lane in which car is travelling.