Signal Box

Nowadays, some old-style signal cabins can still be found. Some still control Mechanical points and signals. More often than not, the frame has now been removed or is out of use. This is due to widespread power signalling. Most modern countries have little, if any, mechanical signalling remaining in the rail system. The modern control centre has replaced widespread signal cabins. These centres, usually located near main Railway Stations , control the track network using computer systems. One such system is CTC , Centralised Traffic Control. ' Track Circuit s', electrically linked sections of track, indicate the occupation of ' Blocks ' of track. When a train is on a section of the network, it completes the local 'circuit' and the nature of the electrical signals will show whereabouts exactly the train lies. In the UK typical modern signal boxes are of the Integrated Electronic Control Centre or IECC, Entrance-Exit panel (NX) or One control route (OCR) type. Variations of these control systems are throughout the world. PHOTO GALLERY
	Image:Signal Box InsidejpgInside A Signal Box On The	"http://wwwinformationdelightinfo/encyclopedia/entry/Isle_of_Wight_Steam_Railway" class="copylinks">Isle Of Wight Steam Railway
	Image:Patrickswell Signal BoxjpgA Disused Signal Box At	"http://wwwinformationdelightinfo/encyclopedia/entry/Patrickswell" class="copylinks">Patrickswell , County Limerick , Ireland

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