Re: [General] Information about block working

[David Johnson <trainman@ozemail.com.au>]

Eddie Oliver wrote:

> David & Julie Donald wrote:
> > To ad a bit of confusion with the whole scenario, Junee South to Harefield is
> > Single Line Track Block operating between Junee South and the CTC panel; the
> > same occurs on such sections as Telerah (now controlled from Maitland) to
> > Mindaribba, Leeville - Casino; Quipolly - Werris Creek South; Table Top - Albury
> > Station.
>
> Because in each of these cases it requires the concurrence of two
> signallers (or one signaller and one area controller if you want to put
> it that way) to admit a train into the section.

I disagree.   While these sections may be worked under track block conditions, they
are, by definition Single Line Track Control.  To be Single Line Track Block, there
must be an attended signal box at both ends of the section.

Whilst LAU300 lists Junee South to Harefield as Single Line Track Block, I can't see
how this can be accurate.  The same applies, as far as I'm concerned, to LAU200 in
relation to Telarah to Mindaribba, and Leeville to Casino, and Quipolly to Werris
Creek South.

LAU300 lists Table Top to Albury station as SLTC.

By reading an extract from SWU300 (below) can someone explain how the sections listed
above could possibly be correct?


SWU300:

Single Line Track Block:
Control Of The Signals:
In this system, the fixed signals for a train to enter and exit a section are
controlled by signallers located in signalboxes at each end of the section.



Single Line Track Control:
Control Of The Signals:
In this system, the fixed signals for trains to enter and exit the system are
controlled:

either by two signallers, each at a local control panel, and each operating the
signals controlling one end of the section

or by two signallers, one at a local contro, panel operating the signals controlling
that end of the section, and the other at a remote signalbox operating the signals
controlling the other end of the section

or by one signaller at a remote signalbox, operating the signals controlling both ends
of the section.

--
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.