Re: Driver in SPAD

[signal_spotter@my-deja.com]

In article <39AA0B9E.8C08B3CF@ozemail.com.au>,
  trainman@ozemail.com.au wrote:
> signal_spotter@my-deja.com wrote:
>
> > Yeah but the term still originated in the UK. They actually have
SPAD
> > indicators to warn the driver that he/she has just passed a signal
at
> > stop.
>
> It would be much more logical to warn them they are about to pass a
signal at
> stop!   Is TPWS installed there yet?
>
> --
> David Johnson
> trainman@ozemail.com.au
> http://www.ozemail.com.au/~trainman/
> ------------------------------------
> These comments are made in a private
> capacity and do not represent the
> official view of State Rail.
> C.O.W.S. Page 11.
>
>
Almost. The last couple of UK interlockings I designed had provision
for TPWS but the actual equipment on site was still under development.
In fact I wrote the SSI data for TPWS so when they connect the
equipment it should work. I hope. For the benefit of others who don't
know what we're raving on about, TPWS or Train Protected Warning System
is UK's answer to trainstops. But it uses a magnet, similar to AWS, I
think, to apply the brakes on a train should it pass the signal at
danger. Basically it's a cheaper version of ATP (Automatic Train
Protection).

regards Ian
Signal Design Engineer


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