A. 
Any vehicle containing advertising matter intended to promote an interest of any business or any commercial vehicle used in connection with any business or commercial activity shall not be parked, stored or maintained in any residential zone except in compliance with the following conditions:
(1) 
Not more than one commercial vehicle per dwelling unit shall be kept on a lot.
(2) 
The vehicle shall not exceed 8,000 pounds gross vehicle weight.
(3) 
The vehicle is used by a resident of the dwelling unit.
(4) 
The vehicle is not parked on the street.
B. 
This section shall apply to all vehicles which are customarily considered commercial vehicles, whether or not such vehicles shall carry a commercial registration.[1]
[1]
Editor's Note: Former Section 15-20.2, Commercial or business telephones, which immediately followed this subsection, was deleted 12-3-2001.