Abstract: An operating mechanism for opening and closing rear seat doors in taxi cabs and other passenger car vehicles and comprising; an operative link that can be connected to the forwardly disposed edge of a back seat door in front of its hinge axis, an opening that is provided through the vehicle pillar post on which the back seat door is hung for receiving said link therethrough, and with a lever or some other operating means to push and pull the operating link so that it will respectively open and close the vehicle door that it is connected to.