| 摘要 |
PROBLEM TO BE SOLVED: To provide necessary road information as necessary by calculating a zone position from the present position of a vehicle to a prescribed distance, and segmenting and transmitting road congestion information in the prescribed zone to the vehicle side. SOLUTION: This system is provided with a navigation device 1 and a CPU 2 as a controller at a vehicle A side, and a road congestion information system 3 and a vehicle position capturing system 4 at an information center B side, and road traffic information is offered to a driver by two-way communication between the vehicle A and the information center B. Then, this system is provided with a present position detecting means 5 and a speed detecting means 6 at the vehicle A side. The vehicle position capturing system 4 calculates a zone position from the present position of the vehicle to a prescribed position based on the present position and speed of the vehicle transmitted from the vehicle. The road congestion information system 3 segments and transmits road congestion information in the prescribed zone to the CPU 2 being a vehicle side controller, and the navigation device 1 offers the road congestion information in the zone to the driver. |
