We all know that pushing down the brake pedal slows a car to a stop. But how does your car transmit the energy from your leg to its wheels? How does it multiply that force so that it is enough to stop something as big as a car?
The base brake system in all modern cars is very similar to the hydraulic brake system introduced in the 1920 Duesenberg. Brake testing is simple and straightforward -- only a few hand tools are necessary.