Signalling Links

The Signal Box - Lots of excellent information on UK mechanical signalling systems.

Radio Electronic Token Block - An excellent description of the former operation of RETB on the Cambrian Line by Alan Jones on the The Signal Box site. The equipment has been replaced by ERTMS.

Junction Signalling in the UK - A simple description, with diagrams, of how junction signalling is displayed to train drivers on UK main line railways.  Written by Clive Feather.

US Railroad Signalling - A good basic outline of US standard railroad signalling rules and techniques.  Strange that it should be from Denmark, but well worth a visit.

NORAC Signal Aspects - A colour chart showing the main signal types and aspects used in North America.

Railroad Operating Rules - A complete set of the General Code of Operating Rules prepared by Daniel Dawdy on his CWRR site.  These rules have been adopted by most US Railroads and including diagrams.

The Railroad Signal Site - A page on the Webville and Hypertext RR website linking to various pages with diagrams of signal aspects encountered on a railroad operating in the 1950s.

West Country Railway Archives - A series of pages form the RailWest site with historical articles on the operation of UK manual signalling covering some technical content, e.g. BR(WR) tokenless block, Somerset and Dorset Joint Railway and other lines local to the area.

La Signalisation Ferroviaire - A detailed site (in French) describing French railway signalling by Xavier Geillon.

Early Track Circuits - A reprint by Tom Ehrenreich of an article from the Scientific American of April 1890 describing a newly installed track circuit controlled signalling system with pneumatically operated signals.  Interesting too because London Underground still uses a similar system.

British Signalling on the Bluebell Railway - A description of the typically British mechanical signalling equipment used today on the Bluebell Railway, one of the earliest preserved lines in Britain.  There are simple explanations and good photos.

Italian Railways Signals - A page of the site by J. B. Calvert describing the systems and signals used.  

LZB Signalling - A description of the German ATP system, part of the interesting signalling site run by Wolfgang Meyenberg.

The Signal Database - a long and mostly useful list of railway signalling sites from around the world.

Central Line ATP - a good description of the automatic train protection (ATP) system used on London Underground's Central Line by Clive Feather.

Danish Railway Signalling - A useful description of the signalling of the Danish Railways in English. 

German Main Line Signalling - An excellent site with clear descriptions with diagrams of both basics and details of German signalling practices.  By Wolfgang Meyenberg.

US Railroad Signalling - A useful US site covering a range of different railroad signalling. It's not pretty but it does the job.

Signalling on the New York Subway - A good description of the signalling system and its operation with graphics and photos by Bernard S. Greenberg. The NYC signalling is similar to London Underground's in some respects so it's worth a look for UK enthusiasts too.

TGV TVM 430 system - This page has a description of the French high speed train signalling system originally written by Thierry Davroux for the European Railway Server site. There is a detailed French language version at La signalisation en cabine et sur les lignes à grande vitesse.

Dutch Railway Signals - Diagrams of old and new signals in the Netherlands (English text).

Chinese Railway Signalling - From the same site as Wolfgang Meyenberg's German signalling pages above. In English. links to a wide range of international railway signalling sites

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