Extensible ramp for public service vehicles

The extending ramp, for access to public service transport at the door thresholds, has guides (6) at the trailing end (3.1) of the ramp plate (3) which are linked to the plate at one end (6.1) and secured to the transport body (4) through a joint at the other end (6.2). The plate guide moves into the extended position through an elongated hole (4.1), with structured dimensions so that the guide lever (5) is at one end of it when extended and at the other end when retracted. An angled surface is at the housing in the final stage of the movement path of the guide in the extending direction to release the dead point position between the guide lever and the transport body and raise the guide lever.