Re: Crossing loop design (r.e. Southern Aurora crash)

[markbau1@aol.comQQQQyuk (MarkBau1)]

The whole mess could be resolved by simply going back to the way Vic 3 pos.
signals were supposed to work in the first place.

Top light for the straight road, bottom light for the divering road.
 So, at our Western line CTC loops we'd simply get a Y/G at the last auto
before the loop, (have to make sure it was far enough away from the loop) and a
R/Y on the home arrival.

If on the straight you'd get a Y/R on the auto and another Y/R on the home
arrival. (In most cases it would not do to go from G/R on the auto to a top
yellow on the arrival due to braking distances.

Hopefully down the road if a US outfit gets V/Line they will convert to
standard US signalling practice which is what the VR system was supposed to be
in the first place.

Mark.




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