I'm afraid Network Rail will likely consider the signal to be more important than the momentary blinding of passengers.
I'm very pleased Network Rail will likely consider the signal to be more important than the momentary blinding of passengers.
at hayes and harlington platform 3 SN287 blinds passengers when walking down the platform towards the exit. does that happen anywhere else?
I thought for a moment you were going to say "at Hayes and Harlington hurricanes hardly ever happen."
Just ignore me.
On another matter, we have traffic lights on what is known as the Ruthin Turn off in Wrexham A525, some of these have had a kind of blinkers attached facing down due to the intensity of the light.
These are led & my guess is the power etc, could be changed for the situation if required.
I appreciate safety is paramount,I wonder in some instances if the correct light/wattage as been installed by the contractors for intensity in specific areas.
just my opinion/
Always safety first, but down here in Cornwall we still have plenty of semaphore's on our platforms, adds to the atmosphere down here
They are not because of the light output. Louvres are fitted because it has been desirable to restrict the visibility of the signal to either a certain direction or distance from the signal.
I appreciate safety is paramount,I wonder in some instances if the correct light/wattage as been installed by the contractors for intensity in specific areas.
And they are the right* quadrant.Real signals
And they are the right* quadrant.
*GWR used lower quadrant signals.
I was not saying they never did just that the GWR continued to use them. Sorry this was not clear.All the British railway companies used lower quadrant signals to begin with.
It's not nonsense to everyone.This "GWR was right and everyone else was wrong" nonsense becomes quite tiresome when you've heard it repeated often enough.
What controls did the GWR have to prevent a lower quadrant signal showing a false clear if the wire snapped?
A solid rod between the arm and counterweight, which rises to push the arm "off". The danger with lower quadrant signals comes when you get a broken wire and a signal arm weighted down with snow and ice.
Exactly. If you can get hold of the IRSE Proceedings for the 1920s period, you can read all the arguments that were made for (and against!) adopting UQ signals in this country.So basically if the weight of snow and ice on the arm exceeded that of the counterweight and the wire snapped there could be a wrong side failure?
Without checking, I can't recall a specific reason why the GWR stuck with LQ, but it may be recorded in those discussions or in one of the more recent signalling books.It doesn't sound likely, but did the GWR realise the risk and decided it was too small or did they go ahead regardless?
Thinking about it, that is probably unlikely. The danger is when the LQ arm becomes disconnected from the rod connecting it to the counterweight and the weight of snow and ice on the arm exceeds the weight of the heavy spectacle plate on the opposite side of the spindle.So basically if the weight of snow and ice on the arm exceeded that of the counterweight and the wire snapped there could be a wrong side failure?
As proved by Henry the Green Engine in 'The Flying Kipper'.A solid rod between the arm and counterweight, which rises to push the arm "off". The danger with lower quadrant signals comes when you get a broken wire and a signal arm weighted down with snow and ice.
This one?
Can't see it as being much of a problem as you don't have to gaze into it or anything to move around the platform.
That picture nicely demonstrates how much clearer LED signals are compared their filament bulb counterparts. Compare SN287 to SN289 on the opposite platform!
I'd suggest that all it demonstrates is how much clearer a signal appears when you're looking straight into the light beam.
I'm reminded of the Abbots Ripton disaster of 1876 involving 3 trains in very heavy snow fall.A solid rod between the arm and counterweight, which rises to push the arm "off". The danger with lower quadrant signals comes when you get a broken wire and a signal arm weighted down with snow and ice.
As proved by Henry the Green Engine in 'The Flying Kipper'.
I'll get my wagon...
Railsigns said:I'd suggest that all it demonstrates is how much clearer a signal appears when you're looking straight into the light beam.