| 摘要 |
PURPOSE:To display the charge of a toll road before reaching a toll gate by comparing the current position of a vehicle with the position information of the toll road and then judging an interchange(IC) where the vehicle enters or exits and then calculating the charge. CONSTITUTION:An entrance/exit IC detection part 22 compares the current position of an own vehicle which is detected 21 with toll road position information 11, and stores entrance IC information 13 at a storage 10 when the detection is made that the own vehicle has entered a toll road. After the own vehicle enters the through traffic of the toll road, the current position of the own vehicle continues to be detected 21 and at the same time the detection part 22 detects from which IC the own vehicle tries to exit. Then, the detection part compares the current position of the own vehicle with the information 11, stores 10 the IC as the exit IC information 14 when the detection part confirms that the current position is on the exit path of IC deviated from the main line of the toll road, and the detection part calculates 23 the charge between the IC which the vehicle entered and the IC which the vehicle exits from a toll road charge information 12, and displays it 30. |
