This document gives guidelines for the calculation of vehicle stopping distances when testing a WSP system using the methods specified in EN 15595@ the standard for Wheel Slide Protection@ under the conditions defined in that standard. This document is only applicable to the calculation of stopping distances for the evaluation of the results of WSP tests carried out in accordance with EN 15595. This document does not apply to calculations used to determine the stopping performance of a WSP equipped train under operational conditions as it is only applicable for specific WSP test conditions.