Danny Sauer wrote:
> patterns is interesting.  Off-road, of course - I'm not sure if it's
> legal or not to do anything like that on the road, but I don't want
> some boob ramming the back of my car due to screwy brake lights either
> way.

Three years ago someone I know built a circuit based on the 12C509 to make 
the headlights of a car oscillate in the same pattern as the headlights of 
American police cars. He built about 20 of them, and I've heard first person 
accounts of people using this device to make other motorists pull over 
(often, on the freeway). It is interesting to note that the *only* thing 
needed to make most people pull over are the flashing headlights.

Anyway, seeing that his invention was so popular, he called a lawyer to see 
if he could commercialize it. The answer was, using any kind of oscillating 
lights is illegal. However, they are not illegal to possess, and it is 
perfectly legal to sell such devices.

Best regards,

Vitaliy 

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