DIN is the national standard body (NSB) of Germany - fully named Deutsches Institut für Normung - and legalised by a treaty.
CEN is one of three European Standard Organisations (ESO) and in charge for the mechanical standardisation (the other are CENELEC and ETSI). CEN is like an umbrella organisation and is supported by all European Standard Bodies.
DIN FSF Normenausschuss Fahrweg und Schienenfahrzeugea is a non-profit organisation and a member of the DIN organisation. The FSF funding is realized by more than 90 companies from Germany, Austria, the Netherlands and Switzerland. The companies are part of the railway industry. Topic of the FSF is to provide the secretarial support for CEN/TC 256 "Railway applications" and to edit the standards of CEN/TC 256.
CEN, the European Committee for Standardization, was founded in 1961 by the national standards bodies in the European Economic Community and EFTA countries.
Now CEN is contributing to the objectives of the European Union and European Economic Area with voluntary technical standards which promote free trade, the safety of workers and consumers, interoperability of networks, environmental protection, exploitation of research and development programmes, and public procurement.
CEN is a non-profit making technical organization set up under Belgian law.
The secretariat of the Technical Committee TC 256 “Railway Applications” is in charge for the administrative matters in producing European standards. The main tasks are the production of standards in line with the CEN/CLC regulations and the monitoring of the time schedule. It is hold by the German national standard body DIN-FSF.