Communications, Control and Signalling

Communications and Control Systems

Telegraph Poles, Cable Conduits and Switch Boxes

Bell Codes and Locomotive Head Codes

Mechanical and Fog Signals

Ground and Fixed Signals

Power Operated and Colour Light Signals

Signal Boxes and Level Crossings

Track Circuits, Warning Systems and Industrial Signalling

Basic Layout Signalling

This is not an area about which I know very much, there are now a number of websites with information in greater depth and detail than I can provide.

Two of particular interest are:-

A site showing a wide range of signals and trackside signs from various periods of the British railway system. Well worth a visit.

This web site is all about railway signalling. Its primary purpose is to describe the principles behind railway signalling in Great Britain, but some coverage of signalling around the world will also be found. The emphasis is on the older, mechanical signalling - that worked by mechanical levers and with semaphore signals.

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