On vehicle recommendation path automatic alteration presentation device

摘要

PURPOSE:To quickly and accurately search a recommendable route by providing matching which calculates the shape correlation between the running locus of a vehicle and a road on a map data in addition to the recalculation of the running route from the correlation between the running locus and line shape. CONSTITUTION:A map data storing means 1 stores a road network and its associated information in accordance with the running status of a vehicle. A running road segment/position estimating means 2 estimates a road segment or its position in map data corresponding to the road along which the vehicle runs having the partial road shape and locus shape including the converting position onto the road in the predicted error range of the latest position on the basis of the running locus. A route searching means 3 searches and calculates a recommendable route to an aimed place on the basis of the map data, estimated road segment/position and a road segment route collating means 5 collates route information with estimated road segment/positional information and instructs researching calculation on the basis of the collated result. Therefore, when the vehicle deviates from the recommendable route, the deviation can be surely detected by collating the correlation between the locus and road shape and a new searching instruction can be given.