| 摘要 |
PURPOSE:To retrieve a proper route even if time zone for passing is restricted on some road by calculating a predicted passing time for each interval according to information memorized in a memory means and setting a route from a departure point to a target point according to the calculated result. CONSTITUTION:A memory means 1 memorizes multiple routes between a departure point and a target point and intervals for each route divided by branches together with information on these intervals. A retrieving device is provided with a calculation means 3 for calculating a predicted passing time for each interval according to information memorized in the memory means 1 and a setting means 5 for setting a route from the departure point to the target point according to the calculated result by the calculation means 3. Thus a proper route can be retrieved according to information memorized in the memory means 1 even if time zone for passing is restricted by various traffic regulations on the route, etc. |
