"Darren New" <dne### [at] sanrrcom> wrote in message
news:4b68a304$1@news.povray.org...
> DungBeatle wrote:
> > There's a picture of a traffic light in Dallas, Texas
where
> > they are horizontal (you have to scroll down):
>
> I was simplifying. Of course we have horizontal lights,
vertical lights,
> lights with only one light, etc. But if the light's
vertical, red is on the
> top here, and if it's horizontal, red is on the left,
assuming it has a red.
>
> This really wasn't a trick question. There's really only
one way to read
> "what color is the light on top"?

The U.S. has taken steps to deal with this problem:

http://mutcd.fhwa.dot.gov/

On December 16, 2009 a final rule adopting the 2009 Edition
of the MUTCD was published in the Federal Register. States
must adopt the 2009 National MUTCD as their legal State
standard for traffic control devices within two years.

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