Re: Double Colour Light Signalling

[Graham D Baker <bakerss@ozdocs.net.au>]

That's why we have qualified DRIVERS at the control of Trains and not some
lunatics straight off the street.

It is all part of what we call road knowledge, and we must pass both an oral exam
& road trial prior to being qualified to work trains over that section of road.

Graham D Baker.

Michael Cuthbert wrote:

> David Johnson wrote:
> >
> > Albert Alcoceba wrote:
> >
> > > Also on the up Illawarra as you approach Erskineville, there are two Green
> > > over Yellow indications before a double yellow for the turn out to the
> > > Illawarra Relief.
> >
>
> Three things:
> 1) It strikes me as a little odd that a 25km/h turnout has the same
> indication as a 80 km/h turnout. The second often doesn't even need a
> speed reduction, while the first does. Maybe a new indication (say,
> Yellow on Green) could be used for the high speed turnouts.
>
> 2) The turnout for the Down Track at Epping (NSW, if you didn't guess)
> doesn't have a turnout indication! Instead it has 'standard' signalling,
> with green/green indicating clear track and the driver is just meant to
> know.
>
> 3) North Shore Line (NSW) signalling. I've noticed that some of the
> signals are missing the "caution" aspect (Green/Yellow), instead
> progressing from R/R, G/R, G/G. Why is this so on a pretty heavily used
> track? An anti-blocking measure?
>
> Mike Cuthbert.