International Railway Union

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International Railway Union
Organization with Headquarters in Mergany (temporarily)
General Information
Year Founded 1925
Official languages:
Ingerish, Kalmish

The International Railway Union (IRU) is a multinational organization with the aim to provide regulations, rules and standards, making the worlds railway systems interoperable and strengthen international rail traffic. The IRU is temporarily headquartered in Mergany.


Railways in Uletha and Archanta started to standardize their railways in the 1920s.

Organisation and members


  • Antarephia Department
  • Astrasia Department
  • Archanta Major Department
  • East Uletha Department
  • Tarephia Department
  • West Uletha Department

Technical committees

Technical committees of the IRU usually consist of leading railway experts of the member nations and companies.


Different kinds of memberships exist in the IRU:

  • Railway governing agencies are National members, they convert IRU-specifications into national laws/guidelines.
  • Rolling stock manufacturers and railway construction companies are Primary members.
  • Independent research institutions and academic departments are Associated members.
  • Passenger or freight train operators can become Applied Members.


IRU-pallet according to IRU-C 893

International standards regarding railway infrastructure are either newly defined by the IRUs' technical committees or existing national standards are adopted and translated.

Some IRU-Codes (IRU-C) are:

Track gauges

Loading gauges

Loading gauge according to IRU-C 311-EU
  • IRU-C 311: Loading gauges defines the maximum width and height for railway vehicles (including their loads) to ensure safe passage through bridges, tunnels and other structures. The classification system usually varies between different countries. Loading gauges can vary across a network, even if the track gauge remains constant.


Other notable standards

  • IRU-C 631: To transmit data (or commands) between two locomotives or a locomotive and the carriages of a passenger train a standardized 17-corded connection cable is used.
  • IRU-C 893: The IRU-pallet is the worldwide standard pallet. Pallets conforming to the standardization are eligible for the World Pallet Exchange Pool (WPEP) organized by the World Organization of Trade and thus allow for an exchange as "pallet for pallet". IRU-pallets are made of wood with 1200 mm by 800 mm by 150 mm such that they are also compatible with the Paroyan proportionate entity.

See also