A theft-deterrent assembly for a container vehicle includes a physical barrier that is movable between a closed position that prevents the opening of a discharge port for the product carried in the container, and an open position that allows the opening of the discharge port. A sensor is provided that determines if the physical barrier is in the open position or in the closed position. The sensor is operatively attached to a theft-deterrent controller that is adapted to record the movement of the physical barrier between the open and closed positions upon the occurrence of such movement.