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Re: RIP ASW?
David Langley wrote:
> David Johnson wrote:
>
> > It will stop a minor over-run causing a major disaster.
>
> In railway signalling on a single line, there is no such thing as a minor over-run.
Yes there is. Picture this scenario: A train is entering the loop, but the driver
puts the brakes on a bit too late and goes 10 metres past the signal. This is my
definition of a minor over-run.
In NSW, the train would just back up and there would be no damage (apart from the
driver's butt)
If running crosses were allowed, and it was a long loop, the train could have
potentially hit the side of the opposing train which could have been travelling at
speed.
--
David Johnson
trainman@ozemail.com.au
http://www.ozemail.com.au/~trainman/