Except as provided in subsection (b) of this section, a street vendor may not sell any food product, other merchandise, or service within 2 blocks of the perimeter of any farmers’ market authorized by the Commissioner of Housing and Community Development when the farmers’ market is in operation. Subsection (a) of this section does not apply to a street vendor who:has written permission from the farmers’ market organizer and permit holder to operate as a participating vendor of the farmers’ market; and prominently displays documentation evidencing this permission issued in accordance with the rules and regulations adopted under this subtitle. City Code, 1976/83, art. 19, §165A Ord. 84-033 Ord. 03-595 Ord. 04-854 Ord. 14-237