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Flashing green signal aspect?


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If you see a flashing green, it means that CBTC is in effect. That is if you are on the (L) line, if not there is a signal problem. Yes, I have seen a flashing green signal on another line then the (L).

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In CBTC, there are only two signal aspects that a T/O should encounter:


1) Flashing green (on homeballs, one flashing green on top): CBTC in effect, signalling aspects via TOD screen in cab


2) Red: only occurs when there is a train ahead or at a terminal. Red signal works in conjunction with the CBTC.

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