This standard defines the limit state for the safe operation of railway vehicles for standard gauge width and their components. It shall be applied provided that the vehicles are operated on a public railway infrastructure. The minimum requirements laid down in the standards for the processes for observing the desired condition of the railway vehicles are also to be applied. In addition, this standard should also be observed when designing new constructions when constructive precautions are to be taken to ensure compliance with the operating limit criteria. NOTE 1 The structural design for a confortable maintenance check of the operating limits should be considered. NOTE 2 The applicability of this standard to railway vehicles of other track widths and their components may be examined in individual cases. This standard applies to ventilated wheel brake discs of railway vehicles, except aluminum brake discs and cast (solid) wheels, the flange faces of which are used as friction surfaces. In the case of deviating constructions from the designated versions, this standard applies mutatis mutandis. The figure representations in this standard are exemplary.