Blue railway signals?
On Thursday, December 13, 2018 at 4:42:40 PM UTC, 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 light. What does it mean and why has it disappeared from Google?
Can anyone remember a time when motorists obeyed traffic lights? Or speed limits?
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