The General Application part of this IRS:

- defines the reference profile of the kinematic gauge for powered vehicles, coaches and wagons,

- fixes the rules associated with the reference profile of the kinematic gauge for determining the maximum construction gauge,

- specifies the position of the various gauges in relation to each other and gives a definition of each,

- enables the maximum construction gauges to be determined:

• by calculation, point 7

• by the graphic method, Appendix B.

Comments and explanations concerning the preparation of the provisions and the formulae are given in IRS 50505-5.

The Specific Application part 1: OSJD applies to vehicles admitted in international traffic for 1520 (1524) mm and 1435 mm track gauges in the networks of OSJD members.