Re: [NSW] A couple of CityRail questions.

["Dave Proctor" <daproc@spambait.ozemail.com.au>]

"David Bradshaw" <davidbradshaw@my-deja.com> wrote in message
92v3u0$ri4$1@nnrp1.deja.com">news:92v3u0$ri4$1@nnrp1.deja.com...
>
> 2) Over the Harbour Bridge, and in the city circle tunnels, I have
> noticed orange/yellow vertical strips of LED lights on the backs of
> signals (or at least on the backs of signals when on the bridge. What
> is the significance of these?

Train approaching indicators - they go off when a trian is approaching, to
warn intending passengers of the approaching train (also helpful for workmen
on the tracks). :-)

Dave