Abstract: A traffic barrier comprises a step-like obstruction able to resist or prohibit the advance of a vehicle, a hinged platform disposed in advance of the step-like obstruction and rockable between a lowered position and a raised position, in which its trailing edge is adjacent the top of the step-like obstruction, spring means urging the platform into its raised position, latch means operable to lock the platform in its raised position to permit a vehicle to advance over the step-like obstruction, and control means including a coin-operated device or the like, for controlling the operation of the latch means.In one embodiment, the latch means is normally in its released condition, and is actuated to lock the platform in its raised position when the prescribed parking fee is inserted into coin-operated device.