The permit shall set the starting time, duration, speed of travel and space between persons or vehicles in the parade, picket line or group demonstration, shall prescribe the portions or areas of streets, alleys, sidewalks or other public places to be used and shall impose such other reasonable requirements as the Chief may prescribe for the control and free movement of pedestrian and vehicular traffic or for the health, safety and property rights of the participants and the general public.
(`88 Code, § 14-29)