United Independent Taxi is a franchised taxicab operator in the City of Los Angeles, and as such is subject to the City's regulations governing taxi-vehicle standards. United Taxi, in compliance with those regulations, equips all its vehicles with the following: a city-approved taxi meter with an affixed LADOT inspection seal; a top light; a radio receiver/transmitter with a computer terminal capable of dispatching a two-way communication anywhere in the licensed service area; a rate card displayed so as to be plainly visible to all passengers in the vehicle; and equipment to extinguish lights on the right side of the vehicle used to signal when a robbery in progress.