Section 127.311 - Motor vehicles(a) The operator must designate and mark parking spaces that- (1) Do not block fire lanes;(2) Do not impede any exits;(3) Are not located in any impounding space; and(4) Are not within 15 meters (49.2 feet) of any storage tank or loading flange.(b) During transfer operations, no person may-(1) Stop or park a motor vehicle in a space that is not designated a parking space; or(2) Refuel any motor vehicle.CGD 78-038, 53 FR 3376, Feb. 7, 1988, as amended by USCG-2019-0444, 87 FR 5690 , Feb. 2, 2022