| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize a proper route guidance method at a rotary intersection including a learning road for a navigation device with a road learning function. <P>SOLUTION: A route guidance method for a navigation device includes: a step (S101) for acquiring exit information at a rotary intersection as a route guidance target; a step (S102) for determining whether an exit road of the rotary intersection, as a guidance point, is a learning road acquired by a road learning function; a step (S103) for executing "exit road guidance for an existing road" for an exit to an existing road when the exit road from the rotary intersection is not a learning road (S102:NO), that is, the exit road exists in ready-made map data; and a step (S104) for executing "exit road guidance for a learning road" for an exit to a learning road when the exit road from the rotary intersection is a learning road (S102:YES). <P>COPYRIGHT: (C)2012,JPO&INPIT |
