Automatic Travel System for Work Vehicle

An automatic travel system for a work vehicle wherein: when, at the time that a work vehicle reaches an entry area for a parallel path, a condition-assessing unit determines that a starting condition for a first automatic travel control has been met, an automatic travel control unit executes the first automatic travel control for causing the work vehicle to travel automatically along the parallel path in a working state; and when the condition-assessing unit determines that the starting condition for the first automatic travel control has not been met, the automatic travel control unit executes an automatic position adjustment travel control for causing the work vehicle to make a position adjustment by a composite operation of forward/backward switching operations and steering operations of the work vehicle so that the starting condition for the first automatic travel control is met.