TRAVEL CONTROL SYSTEM, WORK VEHICLE, METHOD OF TRAVEL CONTROL, AND COMPUTER PROGRAM

A travel control system for a work vehicle includes a positioning device to output position data concerning a position of the work vehicle, and a controller configured or programmed to control operation of the work vehicle, to operate in a recording mode to record the position data as acquired while the work vehicle travels to a storage device, to operate in a reproducing mode to cause the work vehicle to travel via self-driving by controlling speed and steering of the work vehicle based on the position data recorded in the storage device, and, when a manipulation for beginning recording of the position data to the storage device is performed, to determine whether a start condition for beginning recording of the position data is satisfied or not, and to cause a notifier to output a notification as to whether the start condition is satisfied or not.