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#1
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Blue railway signals?
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?
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#2
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Blue railway signals?
On 13/12/2018 16:42, 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? Never heard of it. 4 (& 5)-aspect signals have always had red, green and two ambers as far as I know. I know that the semaphore signals had lenses that were red and blue, but they definitely showed as red and green when lit from behind by yellowish oil lamps at night. SteveW |
#3
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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 light. What does it mean and why has it disappeared from Google? Two possibilities but the first doesn’t really fit with your interpretation of a 4 th aspect. The glass in semaphore signal arms could be seen as blue if viewed in a certain light as the the lens was a bluish glass to when illuminated at night from an oil lamp or in later years a lowish watt electric lamp the yellow flame /filament colour combined with the blue to indicate green. The other is that you have seen or are referring to somewhere other than the UK where blue is sometimes used. GH |
#4
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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? |
#5
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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 light. What does it mean https://en.wikipedia.org/wiki/Railwa...nal#Components and why has it disappeared from Google? It hasn't. |
#6
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Blue railway signals?
On 13/12/2018 16:57, Steve Walker wrote:
On 13/12/2018 16:42, 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? Never heard of it. 4 (& 5)-aspect signals have always had red, green and two ambers as far as I know. I know that the semaphore signals had lenses that were red and blue, but they definitely showed as red and green when lit from behind by yellowish oil lamps at night. The glass in green traffic signals used to look blue to me - when they had the dual-filament tungsten lamps. -- Max Demian |
#8
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Troll-feeding Senile IDIOTS Alert!
On 13 Dec 2018 17:01:02 GMT, Marland, another braindead, troll-feeding,
senile idiot, blathered: Two possibilities but the first doesn˘t really fit with your interpretation of a 4 th aspect. ONE and ONLY possibility: it's the sociopathic Peter Hucker troll himself, hiding behind a new nym! "Think" about it, if it doesn't hurt you too much! |
#9
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Troll-feeding Senile IDIOT Alert!
On Thu, 13 Dec 2018 16:57:52 +0000, Steve ******, the notorious,
troll-feeding, senile idiot, blathered again: disappeared from Google? Never heard of it. Ever heard of a troll named Hucker, senile idiot? The very troll whose cock you INSTINCTIVELY suck whenever he appears under a new nym? LOL |
#10
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Blue railway signals?
On Thu, 13 Dec 2018 17:01:02 -0000, Marland wrote:
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? Two possibilities but the first doesn’t really fit with your interpretation of a 4 th aspect. The glass in semaphore signal arms could be seen as blue if viewed in a certain light as the the lens was a bluish glass to when illuminated at night from an oil lamp or in later years a lowish watt electric lamp the yellow flame /filament colour combined with the blue to indicate green.. The other is that you have seen or are referring to somewhere other than the UK where blue is sometimes used. This was definitely in the UK, and I remember it as a lit blue electric lamp, one of 4 lamps on the column. It was very blue and not green at all. This was about 30 years ago. I vaguely remember asking someone at the time and he agreed that there were blue lamps and they meant something different to the red/amber/green on roads, but he wasn't sure what. The only reference I can find to blue lights on a google search are seperate ones indicating the edge of a tunnel etc, but not part of a "traffic light" set. |
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