Abstract: The present invention provides a restraining system for an axle mounted wheel of a vehicle, the vehicle having a frame to which the axle is secured, leaving sufficient clearance to avoid road hazards and not interfere with the wheels motion during normal operation of the vehicle. The system comprises a cage assembly secured to the frame in the vicinity of the vehicle so as to leave a lower part of the wheel exposed, allowing the wheel to contact the road and to retain the wheel in close proximity to its original installation point and entrap the wheel and carry it along with the vehicle should it become detached from the axle.