| 摘要 |
PROBLEM TO BE SOLVED: To improve the fuel economy of an engine by reducing the stop operations (start operations) of a vehicle at a red light. SOLUTION: An ECU 17 calculates a traveling distance from a current position of a vehicle to the next traffic light (the nearest traffic light) installed on a scheduled traveling route, and acquires a traffic light change timing information (when a green light of the next traffic light starts or ends). Furthermore, the ECU 17 calculates a recommended speed (so that the vehicle is able to reach the traffic light during the green light) at which the vehicle is able to pass through the traffic light during the green light of the next traffic signal based on the traveling distance to the next traffic light and a traffic light change timing information, and a recommended speed display part 16 displays the recommended speed. Thus, it is possible to urge a driver to run the vehicle at the recommended speed, and the vehicle is able to pass through the traffic light during the green light more frequently without stopping at the traffic light when the driver performs an accelerating operation to run the vehicle at the recommended speed. Therefore, it is possible to reduce the stop operations of the vehicle at a red light. COPYRIGHT: (C)2009,JPO&INPIT
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