Tests to date have shown that the Instantor brake system developed by the Rockwell-Standard Corporation successfully eliminates the need for power assist on both passenger cars and trucks equipped with four-wheel hydraulic brakes. In the case of the motor truck, the Instantor is built into the front brakes; in the passenger car, it is built into the rear brakes. The advantages of installing the Instantor system in a vehicle are discussed, particularly the enhanced safety features, lower initial and maintenance costs, and reduced space requirements.