Re: signals in sydney

[Eddie Oliver <eoliver@efs.mq.edu.au>]

Jonathan Boles wrote:
> 
> at a facing point, below the Green/yellow/red green/yellow/red arrangement,
> there is a solitary 'colourless' light. what is it for? 

Your sweeping generalisation is untrue and makes it difficult to answer
your question. You could mean a low speed light (green) or shunt/call-on
light (yellow), both of which may appear to be colourless when not
illuminated.

Please be more specific in describing the location of the "solitary"
light you are talking about - for instance is it immediately below the
other lights in the bottom head, or in a separate light unit?

>Also, what's are
> those triangles of red lights at non-facing points used for. sometimes you
> see two lit, other times only one.

That doesn't seem to describe any actual signalling object.
Where is one of these things, for instance?

Eddie Oliver