Re: Signaller causes SPAD

[antstig@my-deja.com]

Hi Peter,
I'll check out the relays design with some of my signal engineer
friends. Maybe we have a different design but I'm sure if a signal goes
back in the face of a driver (as opposed to being thrown back) then
that signal will have to fail just as the driver is approaching the
signal concerned.

As regards breath testing in my company, I have never heard of anyone
been breath tested for SPAD either signaller or train operator (driver).

All I can repeat is that most signals that go back in the drivers'
faces are due to error on the part of the signallers. This is not
contested by the control room and sometimes an item is booked against
the signaller (especially if the driver kicks up a fuss or I suppose
Bill Bolton would say that is whingeing), sometimes it is covered up.

The trouble is that there are so many times that drivers get stitched
up for incidents/delays in order to cover up for signallers' error.
That's fact and if I did not "whinge" about this to the authorities I
would have had several delays etc on my record that had nothing to do
with me.

Is this the experience of CityRail drivers? Do they conveniently get
blamed more often than not for delays etc. with the service? I would be
interested to know.

Regards

Frank
In article <8q3jo9$1101@inetbws1.citec.com.au>,
  "Peter Dwyer" <peter.dwyer@qr.com.au> wrote:
>
> <antstig@my-deja.com> wrote in message news:8q2fa7
$dfq$1@nnrp1.deja.com...
> > In article <8pmatk$5p51@inetbws1.citec.com.au>,
> >   "Peter Dwyer" <peter.dwyer@qr.com.au> wrote:
>
> > I can only speak for my company but in the vast majority of cases
> > signals thrown (I prefer the word "thrown" to the cosy neutral
> > "restored") back in the face of the driver are the signallers fault.
> > Even they wouldn't have the nerve to concoct a story that the signal
> > mysterioulsy went back on its own accord, of course that could
happen
> > as a signal is failing when a driver is approaching it thus causing
him
> > to hit it, but it is rare.
>
> Hmm, well your company hasn't heard of relay interlockings then.
>
> Signals in relay or electronic interlockings will restore if any of
the
> logic
> used to clear the signal changes state.
>
> That is, if there's a crossover in the route, and a train going in
the other
> direction breaks the detection, it will restore the signal for the
other
> driver.
>
> If there's a faulty IRJ, which drops the track past the signal as he's
> approaching
> it, the signal will restore.
>
> If any of the contacts in any of the logic circuit goes open circuit,
the
> signal
> will restore.
>
> Signallers in mechanical or panel interlockings do not restore
signals as
> easily as
> controllers using mice, but it is more likely that the system will
fail (in
> large systems)
> somewhere before a signaller will restore a signal (Real Life
Experience).
>
> Anyways, breath testing signallers is evident that your HR policies &
> discipline
> measures are shot. It's a cop out.


>
> Seeya!
>
>


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