| 摘要 |
PURPOSE:To perform proper guide without generating a course error, by generating a signal showing a concrete shape such as an interchange or a ramp corresponding discrimination information when the interchange or the ramp approached. CONSTITUTION:When flag information showing the interchange, ramp or complicated crossing of a highway was detected in the road network data contained in the vehicle course searched by a map data calculation means 4 and a vehicle reached this side of the point corresponding to each flag information, a signal such as a character or an arrow showing a concrete shape such as an interchange, a ramp or a complicated crossing, a model drawing or a vehicle guide direction corresponding to each flag information is generated. The guide display of the vehicle at the interchange, the ramp or the complicated crossing is performed on the basis of the display control by a display control means 5 by a display means 6.
|
