Re: Signalling in Victoria

[markbau1@aol.comQQQQyuk (MarkBau1)]

<<<<<<<Dwaf signals are two position signals.>>>>>>>>>

Not true at all, there are both 2 position and 3 position dwarfs. Most 3 pos
dwarfs however only show two ASPECTS"

<<<<<<<<<Also, three position signaling is used as speed signaling,>>>>>>>>>

Half right. Some 3 position signalling is configured as "speed signalling"
Speed signalling is taken to mean when a bottom light is displayed, not to
diverge, (as originally intened) but merely to regulate the speed of the train
for headway/overlap reasons. There are many places where 3 pos. signalling is
used where "speed signalling" aspects are not used. (Melb to Alury SG for
example)

<<<<<<A signal in a 3 position area can show up to 8 aspects>>>>>

7 aspects actually. I think the latest R&R's dropped clear low speed on a home.
It is doubtful that clear low speed was ever installed on a home signal in
Victoria. It certainly hasn't been used in Victoria for at least 30 years, if
it ever was.

Mark.


Visit my train pic website at:
http://home.earthlink.net/~markbau/