When used in this Code, the words "sightseeing bus" shall mean any motor-propelled passenger-carrying vehicle for hire (other than a vehicle operated by the San Francisco Municipal Railway), used in the conveyance, for hire, of tourists and sightseers, over the public streets, for the purpose of a sightseeing trip or tour in the visiting and viewing of places of interest.
(Added by Ord. 603-81, App. 12/18/81)