Map generation device

A map generation device (50) is provided with: a vehicle recognition unit (173) that recognizes another vehicle traveling on an opposite lane facing the own lane on which the own vehicle travels; an information acquisition unit (175) that, when another vehicle is recognized, acquires information about an external condition around the other vehicle in a path matching section in which a travel path of the vehicle matches a travel path of the other vehicle among travel paths of the lane and the opposite lane, said information being obtained from the other vehicle traveling on the opposite lane; and a map generation unit (17) that generates a map relating to the opposite lane in the path matching section. 本发明提供一种地图生成装置(50)，具备：车辆识别部(173)，其识别与本车辆行驶的本车道对向的对向车道上行驶的其他车辆；信息取得部(175)，其当识别出其他车辆时，取得由在对向车道上行驶的其他车辆得到的、包括本车道和对向车道的行驶路径中的本车辆的行驶路径与其他车辆的行驶路径一致的路径一致区间中的其他车辆周围的外部状况的信息；以及地图生成部(17)，其生成与路径一致区间中的对向车道相关的地图。