Section R. 408.12253 - ParkingRule 2253.
(1) When the tractor is temporarily parked within the vision of or within 25 feet of the operator, the operator shall neutralize the controls and set the parking brake or park lock.(2) When a tractor is parked overnight or is left unattended, the power shall be shut off and the controls and attachments set so as to preclude any motion.Mich. Admin. Code R. 408.12253