Railway transport products conformity proving principles applied on the European market and in Poland, survey over sources of the requirements and overview of the Railway Research Institute formal authorisations

The paper starts with a presentation of the conformity proving principles, which are utilized all over the European Union as a basis for the common market. Then, it shows how these principles are being applied in the case of railway transport, taking into account European and national requirements. It describes European requirements applicable before and after implementation of the fourth railway package. It also shows different complementary requirements. The paper ends with a short overview of the Railway Research Institute test capabilities and formal authorisations.