Abstract: A device for releasing the opening of the doors of rail vehicles provides that one or more transmission devices (ZUB1 to ZUB4) are arranged in succession in the approach area of a train station (Bhf) to transmit signals for synchronizing the position sensing devices that are provided in passing trains (Z1, Z2). One position sensing device (3) is influenced directly and the other position sensing device (6) is influenced through an ATP device (ATP =automatic train protection) on the vehicle. The doors can be opened when the train has come to a stop and the position sensing device (3) that is influenced directly indicates that a previously announced stopping point (P1, P2) has been reached within a narrow tolerance (T1), and the other position sensing device (6) which has a broader tolerance range (T2) confirms this position. FIG.