Re: Concord derailment

["Ron Bennell" <ron.bennell@qr.com.au>]

MarkBau1 <markbau1@aol.com> wrote in article
<1998061017441600.NAA28821@ladder03.news.aol.com>...
> <snip> 
> <<<<It holds the same force as the Y/G
> indication in the VR (US) 'speed signalling' indications, which is a
> warning that the next signal is displaying a medium speed indication. No
> ambiguity.>>>>>
> 
> The US system that Victoria adopted wasn't speed signalling until VR
messed
> with it and made the bottom light simply mean 25MPH, (later 40KPH) Prior
to
> this the bottom light meant you were diverging which is still the case in
the
> US today.
> 
> Mark.

My safeworking qualification and experience in Victoria are from 20 years
ago.
I am confused by your comment; please explain!

Ron