No vehicle shall be parked in any alley, except for the purpose of loading or unloading during the time necessary to load or unload which shall not exceed the maximum limit of one-half hour. Every vehicle while loading or unloading in any alley shall be parked in such manner as will cause the least obstruction possible to traffic in the alley; provided this section shall not apply to merchants’ delivery trucks parked in alleys immediately at the rear of their respective places of business if the trucks shall be parked so as not to obstruct the passing of moving cars.
(1972 Code, § 5-406) Penalty, see § 70.99