scope:

This European Standard describes the step-by-step method for thecalculation of brake performance utilizing time step integrationwhich may be used for all types of train sets, units or singlevehicles, including high-speed, locomotive and passenger coaches,conventional vehicles and wagons. This European Standard does notspecify the performance requirements. It enables the calculation ofthe various aspects of the performance: stopping or slowingdistances, adhesion requirements, force calculations, etc. ThisEuropean Standard enables the verification by calculation of thestopping and slowing performance for high-speed and conventionaltrains operating on high-speed and conventional infrastructure. Itmay also be used for the detailed investigation of stopping orslowing performance at any design/verification stage. The proposedmethod of this standard is based on a numerical time integrationalgorithm. The standard explains a simple numerical integrationscheme in order to provide a useful straightforward example of theproposed method. Other numerical time integration algorithms exist,especially more accurate ones, but they are not in the scope ofthis standard. When such methods are used the order of accuracythat they achieve has to be in accordance with this EuropeanStandard. This European Standard also includes examples of distanceand other dynamic calculations, see Annex B.