Automatic Travel System

The automatic travel system 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 system includes: a travel driving mode selection unit 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 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; and an automatic travel control unit that performs automatic travel control wherein a work vehicle is made to automatically travel, on the basis of positioning information for the work vehicle and obtained by a satellite positioning system, along the target travel path generated by the travel path generation unit.