Patent ID: 9587957
Date: 2017-03-07
CPC Classifications: G01C

Claim:
1. A vehicle position display controller that causes a display apparatus to display a map and a position of a vehicle, said controller comprising: a computer to execute a program; and a memory to store the program which, when executed by the computer, results in performance of steps comprising, acquiring map data; specifying a position of a vehicle; acquiring variations in the position and variations in a traveling direction of said vehicle; performing, at a time when said vehicle passes through a connection point of a currently traveled road and a branch road that branches off from the currently traveled road in a direction at an angle equal to or smaller than a predetermined angle, a branch determination processing of determining whether said vehicle has entered said branch road on the basis of results obtained by accumulating, for a section including said connection point, the variations in the position and the variations in the traveling direction of said vehicle; and subjecting, in a case where a connecting road through which said currently traveled road is connected to a road extending in parallel with said currently traveled road lies ahead of the position of said vehicle, said road extending in parallel to said branch determination processing on the assumption that said road extending in parallel is the branch road by making a correction to an angle between said currently traveled road and said connecting road such that the angle is equal to or smaller than said predetermined angle, wherein in a case where said vehicle travels at a speed equal to or greater than a predetermined speed, said correction is not made.