MAP GENERATION DEVICE AND MAP GENERATION SYSTEM

A map generation device (13) includes a planimetric feature position information evaluation unit (222) configured to determine an evaluation value of each of a plurality of evaluation items that serve as indices for evaluation the reliability of the positional information of the planimetric feature. The plurality of evaluation items includes any one of an error amount when arrangement of composing points of the planimetric feature is approximated, a parallelism between an arrangement direction of composing points of the planimetric feature and a movement trajectory of the measuring vehicle, a distance between a position indicated by the position information of the planimetric feature and a position of the measuring vehicle when the position of the planimetric feature is measured, an absolute value of reflection intensity of a position of the planimetric feature obtained from the measurement information or a difference between a position of the planimetric feature and surrounding reflection intensity of the planimetric feature, an altitude difference between a position of the planimetric feature the measurement information indicates and a surrounding thereof, or an inclination of an altitude change at a boundary between the planimetric feature and the surrounding thereof, a direction of a surface obtained by surface approximation of composing points of the planimetric feature distributed in a plane, and a correspondence relationship between a height from a road surface at a position indicated by the position information of the planimetric feature and a size of a surface formed by composing points of the planimetric feature.