Open Access Conference Proceedings

Authorizing the placing in service of a rail vehicle, which is called in Polish "Regulations permitting a vehicle type to operation", is meant as a procedure carried out by appropriate authorities in order to hand over a rail vehicle to be operated in accordance with its purpose. A condition for permitting vehicle types to be operated is to obtain a certificate of placing in service for the first vehicle of a given type. One of the elements of these tests are line tests, i.e. tests realized along railway lines, which are aimed, among other things, at evaluating dynamic properties of a traction vehicle. The tests are realized on tracks of QN1, QN2 and QN3 class, according to the EN 14363 standard, where: QN1 - track of a very good maintenance condition, QN2 - track of a good maintenance condition, QN3 - track of a bad maintenance condition. However, it must be indicated that there exist in Poland also tracks of a very bad maintenance condition, which are not taken into account during the tests. A railway event being a result of operating a vehicle on tracks of a bad maintenance condition will be discussed as an example.

Keywords: Rail vehicles, authorization for placing in service, safety of railway transport

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