| 摘要 |
An information distribution system comprises a roadside apparatus, a center apparatus, and a vehicle-mounted device. The center apparatus transmits to a predetermined area through the roadside apparatus first distribution information including a predetermined division number for identifying a road where the roadside apparatus are installed or second distribution information including speech information, a division number, and execution condition information for executing the speech information depending on the division number included in the first distribution information and that included in the second one. The vehicle-mounted device has a DSRC unit for receiving the first or second distribution information, a storage unit for storing the first or second distribution information, a reproduction unit for executing the speech information, and a control unit for judging on the basis of the execution condition information whether or not it is possible to execute the speech information and allowing the reproduction unit to execute the speech information depending on the result of the judgment. Provision of erroneous information due to leakage of a radio wave arriving from a direction different from the moving direction of the vehicle equipped with the vehicle-mounted device is prevented, and information corresponding to the moving direction of the vehicle. |
