| 摘要 |
PROBLEM TO BE SOLVED: To provide a navigation device and a computer program, which improve visibility of a map that includes displaying of traffic-control information without compromising user convenience substantially.SOLUTION: Of nodes constituting a guide intersection, a node on a leading route and a node adjacent to the node on the leading route are defined as focus nodes; and, of links connected to the guide intersection, a link connected to a focus node is set as a mark display candidate link. Further, of links set as mark display candidate links, a link that is prohibited from entering an entrance link to the guide intersection in accordance with the leading route is set as a mark display link; and a no-enter mark 413 is arranged at a mark display link position on a map so as to show a no-enter to a road formed by the mark display link. |
