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Forum: UK

December 18th 18, 10:33 PM Posted to uk.d-i-y,uk.rec.cycling

Replies: 234

Blue railway signals?

Views: 2,597

Posted By Mike Humphrey

Blue railway signals?

Steve Walker wrote:
It matter for railways due to needing to determine the colour from a
long distance, due to the long stopping distance of a train. It is fine
for a colourblind person to...

Forum: UK

December 13th 18, 09:03 PM Posted to uk.d-i-y,uk.rec.cycling

Replies: 234

Blue railway signals?

Views: 2,597

Posted By Mike Humphrey

Blue railway signals?

Fred Johnson wrote:

Can anybody else remember blue traffic lights on railways? Can't find any evidence on google. I'm sure whereas cars have red/amber/green, railways always had a 4th blue...

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