PROBLEM TO BE SOLVED: To provide an accompanying travel work system allowing a manned travel work vehicle to work ahead and an autonomic travel work vehicle to perform work of a posterior process while travelling in front of the manned work vehicle.SOLUTION: The accompanying travel work system performs work with a manned work vehicle 100 performing ahead work of an anterior process and an unmanned autonomic travel work vehicle 1 performing a posterior process work. The autonomic travel work vehicle 1 includes a control device positioning a position of a machine body utilizing a satellite positioning system and enabling automatic travel along a set travel route. The autonomic travel work vehicle 1 traveling in an oblique front side includes markers 70R, 70L serving as a mark of advancing direction of the manned work vehicle traveling in an oblique rear side.
