On 20 Nov 2006 22:17:49 GMT, (Andrew
Gabriel) wrote:

UK traffic
lights have used LV halogen bulbs for decades, which are much more
efficient than mains signal bulbs in the first place.

I recall seeing some traffic lights being replaced about 5 years ago
with LED's. The old units were partially broken and sat on the grass
verge next to the junction for a couple of days awaiting disposal. At
least one of the light elements, I think it might have been green
although I can't be sure, had a circular fitting that looked like a
fluorescent type.


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