Re: signals in sydney

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Eddie Oliver <eoliver@efs.mq.edu.au> wrote in article
<37EF5B61.57EFF7B8@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
>