Abstract: Wheeled vehicles such as semi trailers, trucks, and automobiles are typically outfitted with a braking system. This braking system can effectively be used to discourage or prevent theft of the wheeled vehicle. A method and apparatus utilizing a valve is inserted in a brake line to disallow pressure information to pass to the brakes from the source of pressure. For air brakes, the valve can be used to block the flow of air from the air compressor to the brakes; or it can be used to vent the air to the atmosphere. For vehicles with hydraulic brakes, an actuated check valve which (when actuated) permits the flow of brake fluid to the brakes but will not permit the relief of pressure in the slave cylinders is used. In either case (pneumatic or hydraulic brakes), the command for actuating the valve can be received from a remote device such as a keypad in the cab of the vehicle or elsewhere, a key-fob transmitter, a cell phone, a radio frequency device, or a web-based communications device.