Re: Tempe - Incorrect Signage?

[BEE EFF <mcreely@pnc.com.au>]

Chris Downs wrote:

>
> Green over yellow is an ambiguous aspect (G/Y=1.5?).  If it were to pulsate
> for an advance junction indication and remain steady for the next signal at
> caution the ambiguity would be removed.  This doesn't excuse what happened
> with SL-2 but the signals purpose is give the driver sufficient information to
> drive the train, not to exercise their mind in a game of second guesses.
>
> ....................and what was the official determination/explanation of
> Concord West a few years ago?
>
> Chris

Chris,

What they have done on some signals now is to add rabbits ears(rows of white
lights) above the upper set signal lights to indicate the direction of travel .

These are placed a couple of signals in advance of a turnout so that the driver
knows in advance of the turnout what is happening(very useful for large
freighters-means you can maintain a constant speed  to clear the turnout
quicker), some of these signals are at Cabramatta-2 indications(heading to the
city - via Granville or Rgents Park), Merrylands-3 indications(Y-link to
Parramatta, over flyover to Granville/Clyde and wrong line to Granville/Clyde).

Drivers have been petitioning for a while to have these installed between Rhodes
and Concord West(heading towards the city for sometime, with no avail)as you get
1.5 just after Rhodes which means the next signal could be 2 yellow(turning out
onto goods line)or 1(green over red)heading towards Strathfield(not good if on a
freighter as there is no way back to goods line without going via city circle).

Must say they remove a hell of a lot of ambiguity from driving trains and should
be installed everywhere(would make life easier for everybody- Freights and
Electrics)and would no doubt speed the system up to no end.

Hope this helps

Regards BEE EFF