| 摘要 |
PROBLEM TO BE SOLVED: To improve the speediness and efficiency of service in the case of changing the destination or start time, the addition of a new destination, etc., owing to the user's unexpected situation by adding and altering the schedule. SOLUTION: A business office has a schedule 22 of respective working vehicles and map information 23 of a control area, has vehicle state information 21, and has vehicle state information 21. Each vehicle has a navigation system 01 which calculates position information on the vehicle and transmits it to the business office through communication devices 01 and 11. Consequently, the business office can grasp the states of vehicles having gone to a working site and stand-by vehicles, selects and displays a candidate vehicle on the area map according to the vehicle state information 21 and schedule information 22 when the user changes the destination or start time, or adds a new destination suddenly, and selects and assign the vehicle, thereby improving the speediness and efficiency of service. |
