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Old 20th Mar 2019, 10:33 pm   #13
Cobaltblue
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Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
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Default Re: Lamps for lamp limiters

Traffic light bulbs were ES as Winston has already posted but I doubt there are any of these left in service now they were thin on the ground in the late 1970s. These were fitted to what we called tin lanterns that date back to before the war.
The Mellor signal head introduced in around 1969 used a 12v 50W capsule halogen bulb.

In the case of tin and Mellor the lens dictated the colour the bulbs give white light.

Of course most signals have moved to LED

The move to LED started around 20 years ago but virtually all new installations have been LED for more than 10 years.

Cheers

Mike T
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