Route searching system of navigation apparatus

Abstract

Abstract A route searching system has node data (3) representing information on positions and attributes of the same, intersection data (1) representing information on intersections, road data (2) representing information on roads, and a route searching section (4)for searching for the optimum route from the intersection data (1) and the road data (2) Information on weighting based on road circumstances is set in the road data, and weighting is performed in accordance with the weighting information with respect to possible routes searched by the route searching section to find the optimum route. This system enables the time taken for traveling along a selected course to be computed with reference to the weighting information and enables route searching to be performed in short period of time. Also, intersections to be passed without turning can readily be removed to prepare guidance data only from data necessary for guidance.

Inventors

• 👤 Takashi C/O Aisin Aw Co. Ltd. Yamada

Bibliographic Details