Patent ID: 7456757

Claim:
A navigation apparatus of a vehicle comprising: storage means for storing information about the vehicle and a road area; guide route calculating means for calculating a guide route on the basis of the information stored in the storage means; and entry permission data rewriting means, wherein the storage means is a storage medium for storing entry permission data of permission for the vehicle to enter a time limit charging road area, regarding the time limit charging road area, a vehicle is allowable to enter the time limit charging road area during a charging period when a charge of the time limit charging road area is preliminarily paid, the entry permission data rewriting means rewrites a content of the entry permission data in the storage medium into a content that entry of the vehicle into the time limit charging road area during the charging period is permitted when the charge has been paid for the charging period, the guide route calculating means calculates the guide route avoiding the entry of the vehicle into the time limit charging road area in accordance with a content of the entry permission data that no entry of the vehicle into the time limit charging road area is permitted at a current time, and the guide route calculating means calculates the guide route without avoiding the entry of the vehicle into the time limit charging road area in accordance with a content of the entry permission data that the entry of the vehicle into the time limit charging road area is permitted at the current time.