§ 72.06  ALLEYS. 
   (A)   No person shall park a vehicle with any portion thereof projecting into any alley entrance.
   (B)   No person shall park a vehicle 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 ½ hour. Every vehicle while loading or unloading in an alley shall be parked in such manner as will cause the least obstruction possible to traffic in the alley.
Penalty, see § 70.99