The present invention flexibly determines a starting route in which autonomous travel is started. The present invention is provided with a route generation unit that generates scheduled travel routes(K1, K2) including a plurality of work routes (K1) in which a work vehicle is caused to travel autonomously; a control unit that is able to cause a work vehicle (1) to travel autonomously along the scheduled travel routes (K1, K2); an information acquisition unit that acquires position information and azimuth information of the work vehicle (1); and a specification unit that specifies an autonomous travel candidate route (K3), in which the work vehicle (1) is able to start autonomous travel, prior to when the work vehicle (1) starts autonomous travel. The specification unit sets a candidate specification area (P) on the basis of the position information and the azimuth information of the work vehicle (1), and is able to specify, as the autonomous travel candidate route (K3), the work route(K1), included in a candidate specification area (P3), of the plurality of work routes (K1).