This European Standard defines an harmonized way to assess the braking performance by test of locomotives, passenger coaches, freight wagons and self-propelled passenger trains (EMU/DMU). The European Standard sets out the standardized method for undertaking brake performance tests and the correction factors to be applied to the data obtained for all types of rolling stock. This European Standard also defines the methods to assess the brake performance in terms of stopping distance, and from this the process to determine vehicle(s) deceleration and brake weight. It then deals with conversion of the brake weight to the brake weight percentage of a vehicle or train for operating purposes. It also sets out additional factors when determining the brake weight percentage of a train calculated from specified brake weight, depending on the formation of the train. In Annex D there is a method for determining brake performance of freight wagons fitted with P10 cast iron using limited testing (force measurement).