A. 
The purpose of this article is to establish reasonable criteria for the display of advertising and commercial messages on special livery vehicles licensed under this chapter. It is in the public interest that such advertising or commercial messages should not obstruct or distract drivers and/or pedestrians so as to cause a danger or hazard.
B. 
Nothing in this article shall be construed to prohibit any form of constitutionally protected speech or expression.
The following regulations shall apply to all advertising on special livery vehicles:
A. 
Advertising shall be displayed only on a single fixed flat sign or panel, not larger than 20 inches by 28 inches, attached to or painted on the back of the special livery vehicle. No three-dimensional, illuminated or moving displays shall be permitted. In addition, a pedicab owner may display his or her company logo on the sides of each pedicab owned by that company, in a space not larger than two square feet.
B. 
Letters and numbers shall be not more than 12 inches in height nor more than six inches wide.
C. 
Advertising shall not be displayed on the top of the roof, canopy or cover of a special livery vehicle.
D. 
All advertising proposed shall be submitted to the Commissioner of Accounts for review.
E. 
The Commissioner of Accounts shall have authority to reject or cause the removal of any advertising which is in violation of this article or which, in the Commissioner's judgment, would obstruct or distract drivers and/or pedestrians so as to cause a danger or hazard.