From: Tony Williams 

Antti Kurenniemi wrote:
> Have a look at the 3d illusions section on this page:
> http://users.skynet.be/J.Beever/pave.htm - really really neat! They're
> pavement drawings (buy a guy called Julian Beever), that when viewed from a
> right angle appear 3D - and they really do that, holy macaroni!
>

Nice! The globe is particularly impressive.

A while back in the UK they experimented with painted road markings which
used this effect, so that a "SLOW" painted on the road looked as
though it was rising up in front of you. The trial was halted because
people thought they were going to crash into the signs.

--
Tony

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