Navigation system

Abstract

A map data reading and processing section acquires map information belonging to a hierarchical structure classified depending on coverage of a road map, a remote controller specifies a bypass region to bypass traffic of a vehicle in response to an input operation, and the route search processing section of a navigating function section searches for a route that detours the bypass region when the bypass region is included within the coverage of the map information belonging to a hierarchy acquired by the map data reading and processing section.

Dependencies are inferred from the claim text.