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Colour Light Signals

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Signal CO20 at Colchester is a three-aspect searchlight signal capable of displaying red, yellow or green aspects through a single aperture. As well as a position light signal mounted at an unusually low height, the signal is fitted with alphanumeric route indicators and a "CD"/"RA" indicator. (Photo taken 16 May 2006)

Hilton Junction
Colour light stop signal P6, controlled from Perth signal box, also functions as the Up direction splitting distant signal for Hilton Junction. The combination of aspects seen here indicates that the semaphore junction signal ahead is cleared for the Up Branch line towards Ladybank. (Photo taken 9 August 2013, by Jed Scott)

Hilton Junction
The 'proceed' aspects displayed by the Up direction splitting distant signal for Hilton Junction are duplicated in advance by this ground-mounted signal located inside Moncreiffe Tunnel. Space constraints inside the tunnel prevent the two aspects being stepped in the same manner as the preceding signal. Two yellow lights displayed at the same height indicate that the junction signal ahead is at 'danger'. (Photo taken 12 December 2019)

Manchester Piccadilly
Colour light signal number MP393 at Manchester Piccadilly station subdivides Platform 14 to facilitate platform sharing. A co-acting signal, plated "MP393CA", was provided in 2000 because an overhead line mast was obscuring the main signal from the view of approaching trains. Both signal heads are seen displaying a double yellow aspect. (Photo taken 18 July 2009)

The aspects of colour light signal CA110, located on the Up platform at Shepreth station, are duplicated on the ground-mounted co-acting signal on the opposite side of the line. The latter signal, which was added in 2000, is plated "CA110CA" (the prefix "CA" is the code for Cambridge signal box, and the coincidentally matching suffix letters stand for "co-acting"). Both signals are displaying a green aspect while the automatic level crossing beyond is open to road traffic; the crossing will close automatically on the approach of a train. (Photo taken 24 June 2013)

Early in 2003, signal number PZ70 at Penzance station's Platform 4 was fitted with a trial 'miniature close-up signal' for short-range viewing. The miniature signal is seen repeating the red aspect of the main signal. (Photo taken 24 April 2008)