Re: Signalling, was : Re: Outcomes of the Hines Hill crash.
Krel (krel4203@netconnect.com.au)
18 Jun 97 07:39:45 GMT
MarBau <marbau@aol.com> wrote in article
<19970617181901.OAA09940@ladder02.news.aol.com>...
> <<<Green over Yellow indicates "reduce to medium" which in Vic means pass
> the
> next signal at or below medium speed except on the Western CTC (Pyrenees
> Loop to Wolseley) where it means pass the Arrival Clearing Board at or
> below medium speed. >>>
>
> G/Y is only found on repeating signals. Repeaters originally had fixed
> bottom yellow lights, later some repeaters were made to show reduce to
> medium by adding a bottom green light. Thus the two aspects possible were
> G/Y or Y/Y Note, repeaters can never show stop. Repeating signals are
> pretty rare, they are used when signalling changes from 2 position to 3
> position, (eg St Albans on the up, Somerton BG, ). They are also used
when
> the distant signal is too close to the next home in advance. In this
> situation they give the driver more warning of signals ahead than a
single
> distant would. There have been a few other screwball applications of
> repeaters over the years.
Please note that a Repeater in Victoria is nothing like a Repeater in NSW.
A Victorian repeater is effectively an outer distant (ie a signal in its
own right). A NSW repeater is a co acting signal that it positioned before
the signal to which it applies.
>
> The aspect you are looking for is Y/G which is "reduce to medium speed"
>
Sorry, I messed this one up. I must have been slightly brain dead at the
time