LOCATION ESTIMATING DEVICE, STORAGE MEDIUM STORING COMPUTER PROGRAM FOR LOCATION ESTIMATION AND LOCATION ESTIMATING METHOD

A location estimating device has a processor that is configured to calculate a first estimated location of a vehicle using positional information representing the location of a vehicle and first map data overlapping with a first section of a vehicle traveling route, to calculate a second estimated location of the vehicle using positional information and second map data that overlaps with a second section of the traveling route, the first section and the second section having an overlapping section, and to assess whether or not the precision of the second estimated location satisfies a predetermined assessment criterion when the vehicle is traveling in the overlapping section from the first section toward the second section.