A common method of testing brakes is to bring a vehicle up to speed and then slam on the brakes. The stopping distance can be measured or a decelerometer can be used to measure the stopping forces.

A brake dynamometer is a device that measures the horsepower at the engine’s output shaft. It can also measure the torque and brake power required to operate a driven machine.

The dynamometer allows testing of the drum and disc brake systems at full scale in the range of functional tests and durability: friction material: brake pads and shoes. brake drums. solid and ventilated brake discs of any type and material.