At 11:04 27/07/99 -0400, you wrote:
>the light.  Is there another way to tell what the color is without being
able to
>see color on these lights that all all in one 'eye'?

I don't know if there is or not, but one of the things mentioned was how
easy it was to do different shapes- which could be very useful to the
sight-impaired, and also make the sign more noticeable to all drivers- the
green could be a flashing or 'moving' arrow, red could be a solid X, and
amber could be a flashing X.  Something like that anyway- seems a shame to
have the capacity to make shapes and not use it!

Nigel