This document establishes thermal comfort parameters for passenger compartments or saloons of railway vehicles. These comfort parameters apply in a similar way to the areas reserved for train staff. This document also specifies conditions, performance values and the comfort parameter validation methods for compartments or saloons. This document is applicable to urban (metro, tramway), suburban and/or regional vehicles equipped with cooling and/or heating/ventilation systems. It does not apply to main line vehicles and driver's cabs which are considered in separate European Standards.