| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable the reliable guiding of a vehicle, on which a navigation device and an ETC(electronic toll collection system) motor-vehicle-mounted device are mounted, to an ETC apparatus-installed gate at tollgates in an express highway. SOLUTION: An ETC motor-vehicle-mounted device is connected to a navigation device, and it is determine whether tollgates are within a predetermined distance by a navigation control device (Step 1). Then it is determined whether the tollgates are ready for the ETC or not (Step 2). Here, when ETC-ready toll gates are close on the basis of the results of both determination, the ETC information on the toll gates is acquired from inside a DVD-ROM or by communications with the toll gate (Step 3) to display guide to the ETC gates on a screen for navigation (Step 4).</p> |
