AUTOMATIC TRAVEL SYSTEM

The present invention is capable of generating a target travel path that is in accordance with a travel driving mode, improves work efficiency, and causes a work vehicle to automatically travel while turning at an appropriate turning radius that is in accordance with the travel driving mode. The present invention comprises: a travel driving mode selection unit (56) that is capable of selecting one travel driving mode, from among a plurality of travel driving modes, as a travel driving mode for a work vehicle; a travel path generation unit (53) that generates a target travel path by using a turning radius corresponding to the travel driving mode selected by the travel driving mode selection unit (56); and an automatic travel control unit (18) that performs automatic travel control wherein a work vehicle (1) is made to automatically travel, on the basis of positioning information for the work vehicle (1) and obtained by a satellite positioning system, along the target travel path generated by the travel path generation unit (53).