Who is exempt from sidewalk rules

The prohibitions in this article shall not apply to persons: (1) Unable to comply due to suffering a medical emergency; (2) Acting as authorized or allowed by any article under this chapter or any other ordinance, permit, regulation, or statute; (3) Performing a government-approved public safety, maintenance, or construction function; (4) Participating in or attending a parade, festival, performance, rally, demonstration, meeting, or similar event conducted on the public sidewalk pursuant to, and in compliance with, an applicable permit; (5) Sitting on a chair or bench supplied or permitted by a public agency; (6) Waiting in line for goods or services, unless the person refuses to comply with a lawful order of a police officer to form the line in a way that moderates impact on passage along the sidewalk; (7) Waiting at a bus stop or taxi stand for a bus or a taxi; (8) Moving freight or merchandise for commercial purposes; or (9) Engaged in expressive activities or who are using tables or other portable outdoor furniture or items for the purpose of displaying literature or other expressive material or otherwise directly facilitating expressive activities; provided that the tables, furniture, or items do not obstruct the free movement of pedestrians through the pedestrian use zone, do not interfere with other lawful activities taking place on the sidewalk and comply with other provisions of this chapter; and provided further, that no table, item of furniture, or other item shall be larger than 5 x 2 feet or 10 square feet for each person engaging in the expressive activity.