It is unlawful for the operator of any motor vehicle to pass another motor vehicle which is moving in the same direction on any road or driveway which runs across, over, or through any portion of the Pullman High School grounds; provided, this prohibition shall not extend to any parking lot where parking spaces are designated, as long as any pass within such parking lot is made without endangering any person or property. (Ord. 82-56 §1, 1982; Ord. B-303 §1, 1976).