A vehicle characteristic constricting choice is taken into account in route calculation. Accordingly, a subset of route information is omitted from the calculated route.

The method involves computing a route with way points from a starting position to a destination in a central station and outputting the route to the driver as instructions taking into account current position coordinates. The central station checks the qua...

The system consists of a map matching module (2) coupled to a routing module (4) for transmitting card data. A neural network (3) arranged between the road map and routing module, serves as an adaptive filter and transforms the card data according to the u...

In a communication route guidance system, data is transmitted and received between a information center and each of a plurality of mobile units mounted on moving bodies such as vehicles using communication. The information center has the latest road data. ...

A route search location determining section (12d) of a mobile body (10) decides whether to conduct a route search at the mobile body (10) or to request the route search to an information center(30) based on various conditions such as priorities and how old...

A navigation system includes a navigation center and a plurality of navigation apparatuses each of which has a data storage that stores various information. In this navigation system, data (coordinate data of each of traveling intersections) concerning a r...