Re: Passenger Information Displays

[denjo02@cai.com]

In article <34FA36C5.8C961AE4@qrail.com.au>,
  Alex Borodin <alex.borodin@qrail.com.au> wrote:
>
> Thanks for your reply Geoff.
>
> Geoff Lambert wrote:
>
> > It is worth thinking about colour and catering for colour-vision
> > impaired people- a significant proportion of the population.  The old
> > style train indicators on the City Circle in Sydney, which had a white
> > indicator light beside each station name to indicate that a train
> > stopped there, were haphazardly replaced some years ago by newer
>
> This is indeed a problem. Unfortunately, most of the cost-effective
> LED displays which can be used outdoors are Red only. There are
> Amber ones, but they are a good deal more expensive.
>
As someone who is partially red-green colour blind (I have no idea of colour
light signal indications at a distance) I have absolutely no difficulty
reading LED displays.  The difficulty is mixing red/green/grey which all
appear similar.  Red on a black background is fine for me.

Cheers, John Dennis

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