No person who owns or has possession, custody or control of any semi-trailer or trailer shall park such a vehicle upon any street or alley unless such vehicle is, at all times while so parked, attached to a truck or trailer capable of moving such vehicle in a normal manner upon the public streets and highways.
('64 Code, § 14-79.1) (Ord. 369, passed 12-23-69) Penalty, see § 70.99