33 CFR §127.311
- (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.