Method for guiding a vehicle, comprises on board unit and fixed server and a number of data exchange strategies which are selected according to factors such as server load and communication coverage

摘要

The vehicle on-board equipment (1) includes a terminal (17), control unit (5), modules for communication (9), e.g. GSM or UMTS, and localization (11), vehicle equipment interface (19) and audio unit (21). The fixed server (25) has formatting and route servers (35,29), customer and route databases (33,27) and traffic data (32). Data interchange between vehicle and server is varied dynamically to suit varying vehicle speed, trajectory, server load and coverage of terrain Independent claims are also included for the following: onboard equipment used by the method including the means to dynamically select data exchange procedures; and a vehicle that uses the guidance method.