When a driver jams the brake pedal too hard, antilock hydraulic valves subtract brake pressure at a given wheel so the wheel does not lock up.

• 当驾驶把煞车瞬间踩死，防锁死煞车系统的液压阀便会减低施加在轮胎上的煞车力道，如此一来轮胎便不会锁死。