European Railway Agency - ERA

Moving Europe towards a sustainable
and safe railway system without frontiers.

Reference Document Database (RDD)

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The Reference Document Database (RDD) is a public register providing public access, without registration, to the National Technical Rules (and their classification) published by the Member States.

RDD provides a free subscription to the publications via the home page, just above the list of publications:

  • RDD Publications RSS Feed
  • Subscribe e-mail for notification of publications.

There are two main possibilities:

  • for online consultation, please access from the RDD menu (Part II - NRD\National Technical Rules) which displays the NTR search page, select the desired filtering options and press the ‘Search’ button
  • for offline consultation, please access from the RDD menu (Reports), select the desired report from the provided list (e.g. List of National Technical) and after selecting the desired parameters for the report, press the ‘View Report’ button. After execution, the report can be saved (we recommend MS Excel format) for offline consultation.