Article 2
1. The TSI shall apply to the ‘rolling stock — freight wagons’ subsystem as described in point 2.7 of Annex II to Directive 2008/57/EC. 2. The TSI shall apply to freight wagons with a maximum operating speed lower than or equal to 160 km/h and a maximum axle load lower than or equal to 25 t. 3. The TSI shall apply to freight wagons which are intended to be operated on one or more of the following nominal track gauges: 1 435 mm, 1 524 mm, 1 600 mm, and 1 668 mm. The TSI shall not apply to freight wagons operating mainly on the 1 520 mm track gauge, which may occasionally be operated on 1 524 mm track gauge.