§ 20-302 PARKING FOR PROHIBITED PURPOSES.
   No person shall park a vehicle upon any roadway for the principal purpose of:
   (A)   Displaying the vehicle for sale;
   (B)   Displaying advertising or displaying merchandise or other things for sale or selling merchandise or other things; or
   (C)   Washing, greasing, or repairing the vehicle, except repairs necessitated by an emergency.
(`90 Code, § 20-129)