two different things. Power brakes reduces the pedal pressure required by the driver to stop. power brakes are reguired with ABS. ABS keep the wheels from locking up during braking so u can keep control of the car/truck. Anti-lock Braking System.
The ABS system is a safety feature and not a type of brake system. All cars these days have power brakes.
First let me explain power brakes. Basically a power brake system has a booster in the engine bay that provides extra power in pushing your break pads together or your shoes apart. What this means is the driver is not mashing down the brake pedal using their own force to try and stop the car. The extra power helps stop the vehicle. ABS (Anti-lock Brake Systems) is a system designed to stop the wheel froms locking up, or stopping from spinning. What happens is there is a sensor on the cv axle and a gear object attached to the rotor or hub assembly. When the sensor detects the gear isnt rotating a small pump starts releasing the brake pressure on that side so the tire will keep spinning leaving the driver in control. Overall ABS is a safety feature to help maintain control over the vehicle allowing the car to be steered and usually stop sooner as the tires will still grip the road. However, occaisionally locking up the tires will stop the car sooner but in the process you loose control of the vehicle as the tires are no longer gripping the road in turning motion.
