Signal A (controlled) (J1+2)
4 Aspect
Signal B
3 Aspect Distant
Signal C (auto)
4 Aspect
Signal A with junction indicator 1 takes you to signal B which is a distant. Typically you wait at Signal A until the fast clears signal C. Signal A then steps up to 2Y.
What has suddenly started to happen is that Signal A now clears to 1Y. Suffice to say it's caused a little bit of confusion. The signal was challenged as it appears as an incorrect sequence and Signal A has never shown a single yellow until now. Clearly it's possible as its happening but wouldn't this need specific intervention from the Signaller to set the correct route and to specifically set it as a single yellow ?
My initial assumption is that because this signal causes delays as it takes a train to clear signal C before it can step up, this is being done to improve performance.
For Signallers and people who know about interlocking etc. This is for Victoria box.
Cheers as always.
4 Aspect
Signal B
3 Aspect Distant
Signal C (auto)
4 Aspect
Signal A with junction indicator 1 takes you to signal B which is a distant. Typically you wait at Signal A until the fast clears signal C. Signal A then steps up to 2Y.
What has suddenly started to happen is that Signal A now clears to 1Y. Suffice to say it's caused a little bit of confusion. The signal was challenged as it appears as an incorrect sequence and Signal A has never shown a single yellow until now. Clearly it's possible as its happening but wouldn't this need specific intervention from the Signaller to set the correct route and to specifically set it as a single yellow ?
My initial assumption is that because this signal causes delays as it takes a train to clear signal C before it can step up, this is being done to improve performance.
For Signallers and people who know about interlocking etc. This is for Victoria box.
Cheers as always.