Re: Signalling in Victoria

[cmgord@ecr.mu.oz.au (Christopher_Martin GORDON)]

: 3 position repeater signals are actually just a '3 position' distant,
: and can display:
: Yellow/Yellow - Next Signal at Stop,
: Green/Yellow - Next Signal at Proceed (displaying a normal speed aspect)
: Yellow/Green - Reduce to Medium Speed.

On the down line from Bengigo coming into St Albans there is a
repeating signal with the bottom light fixed at yellow and the
top light is yellow/green so it is just like a distant but with a
yellow marker?

: There are Repeaters showing Y/G at Seymour & Ballarat, probably other
: places too.
:  
: Repeaters are used to repeat Points in a few places as well.

Like what do you meen? any examples?


: For a Dwarf to show Green, the Track must be clear to the next signal,
: and the next signal must be off.  There are quite a few, Burnley,
: Bayswater, Nth Geelong C, Maryborough...


AI spose burnley is the sidings, and Camberwell also.

Are there any dwalf signals (old round ones with painted signal) that
show green and red only?

I know that the wire pull signals at Ringwood were Red and Yellow and 
motor ones have Red,Yellow and green (even though some could't show
green)

What is the correct way of reading signals on a post
like with 2,34.. homes etc?


: Centre line to Box Hill is Automatic And Track Control, it used to be
: Lever Locking and Track Control, LLTC was rolled into ATC when the 1994
: rules appeared.  There is actually a control lever at each end of the
: section, so that Box Hill must reverse its lever before Camberwell can
: pull the Home Departure off.  The Signals actually hang of a '4 wire'
: system, so if both Departures at each end are at stop, then all the
: intermediate autos are at Stop.  When one of the Departures is pulled
: off, the autos will clear away the Departure being pulled off.  After
: the train passes an auto, the auto will remain at stop unless the
: Departure is pulled of for the next train.

: The Underground Loop was originally LLTC (same as the Bidirectional
: Running across the Viaduct), and there are control levers at each end of
: the section.  When there were still individual boxes, they had to be
: worked as normal, but AFAIK the route setting logic at Metrol does it
: automatically now.

: As for Caulfield - Moorabbin, AFAIK it doen't have Control Levers, but I
: don't know if it's a '4 wire' or a '2 wire' system.  2 wire systems are
: like the NE SG CTC, (and the Western CTC) where the intermediate autos
: reclear after the passage of a train even when the Departure in the Rear
: remains at Stop.

: After ploughing thru that, I hope it helps..

: BC

--
Chris Gordon
http://www.ecr.mu.oz.au/~cmgord