This European Standard is applicable to railway vehicle driving cabs which are air-conditioned or heated/ventilated. These include: ? locomotives; ? mainline, suburban and regional vehicles; ? urban vehicles such as metros and trams. This European Standard does not consider the special operational requirements of shunt locomotives. This European Standard specifies the comfort parameters for the driving cab to ensure driver comfort which helps safe operation. The conditions under which the physical parameters mentioned in this European Standard shall be measured are defined in EN 14813-2.