Patent ID: 8857574

Claim:
A device for blocking a vehicle, comprising: (a) a guide track disposed along a driveway; (b) a carriage guided by the guide track and provided with a blocking means for blocking a wheel of a vehicle; (c) a locking member provided on the carriage for locking the carriage releasably relative to the guide track; (d) displacing means for displacing the carriage from a first rest position for the blocking means to a second blocking position, wherein the displacing means are provided with an energy storage system such that energy supplied by the vehicle can be used to displace the carriage, wherein the displacing means comprise a drive operatively connected to the energy storage system for carrying the carriage from the first to the second position; and (e) releasing means operatively connected to the displacing means for releasing the carriage such that the carriage follows a wheel of a vehicle as soon as the wheel passes the first position, wherein the vehicle charges the energy storage system as the vehicle drives away after the blocking is released, whereby the energy supplied by the vehicle is available for a subsequent vehicle positioned at the guide track.