No vessel that is used, or is intended for use, as a show boat, restaurant, floating night club, or other place of amusement may anchor or operate in District of Columbia waters, or tie up to any wharf or other place in District of Columbia waters, without prior approval of the Mayor.
While engaged in taking photographs, no person licensed under §521 or §522 of this chapter shall impede traffic as defined in the District of Columbia Traffic Acts; nor shall any photographer remain longer than five (5) minutes at any one (1) location on the streets, sidewalks, or other public spaces.
No person shall conduct or take part in any race, dance, or contest in which any individual shall participate for more than a total of twelve (12) hours in any consecutive twenty-four (24) hours.
Each horse-drawn vehicle engaged in carrying loads on the streets and highways of the District shall be equipped with an effective brake.