Provided is an accompanying traveling work system in which work is performed by a manned work vehicle (100) that performs pre-process work ahead, and an unmanned first work vehicle (1) that performs post-process work, so that the manned traveling work vehicle can work ahead, and the first work vehicle (1) can performs post-process work while traveling in front of the second work vehicle (100), wherein the first work vehicle (1) includes a control device (30) that positions a machine body, utilizing a satellite positioning system, and causes the first work vehicle to automatically travel along a set traveling route R, and the first work vehicle (1) traveling diagonally in front includes markers (70R, 70L), which are landmarks for an advancing direction of the manned work vehicle traveling diagonally behind.
