"Sylvain" wrote in message
t...
Roy Smith wrote:

If you cannot distinguish red, green, and white, you cannot recognize an
aircraft's position lights, and thus determine it's orientation to you.

if you rely on color to determine risk of collisions, you may be the
one having a problem. Anyway this argument has been debunked long
ago.

If that is so, why do airplanes still use different colored lights, instead
of all the same color lights?
--
Jim in NC