It shall be unlawful for any person to remain upon or cause any vehicle to remain upon the premises of any park or city owned adjoining property between the hours of ten o'clock (10:00) P.M. and five o'clock (5:00) A.M. without written permission of the city. All unauthorized vehicles shall be towed away at the owner's expense. (Ord. 93-7, 10-4-1993)