Vehicle navigation system with memory storage for map data including that for roads and junctions and a travel route unit computes travel route based on stored data

摘要

The indicating control unit produces the junction image, by determining the representation limits of the junction image on the basis of the travel route data and the data relative to the junction requiring a travel route guidance. The indicating control unit evaluates whether the junction, requiring a travel route control, is larger than the predetermined limit. In the event that the junction is larger than the predetermined limit, the indicating range can be controlled in such a manner by reducing the scale, so that the entire junction can be indicated.