A remote controller (100) comprising: an emergency stop button (110) that receives an emergency stop operation, a temporary stop button (120) that receives a temporary stop operation, and a control unit that restarts the running of a tractor when a running restart operation is performed after the tractor has been temporary stopped, the running restart operation including a pressing operation for pressing the temporary stop button (120) continuously for a first predetermined time and a release operation for releasing the pressing operation on the temporary stop button (120) within a second predetermined time following the first predetermined time.