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Originally Posted by bhduxbury
sweet.
i assume it only works in cities where they installed lights controllable by emergency vehicles?
now, does this unit really work? do cities combat it by reprogramming the lights? is there a single protocol for all such lights across cities?
please advise.
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Hi,
The original Semaphore Control System was invented by 3M Co. and went by the name
OptiCom. My Late Father (Former 3M Executive VP) was involved in it's initial phases and the city where I live - St. Paul, MN (and 3M's HQ) was the first city to employ the System - a SweetHeart Deal with 3M for Beta Testing it. It works using codified light pulses, whether these pulse frequencies vary by Municipality I cannot say, but I suspect not, doesn't seem any point to it.
This item would seem to work since they are advertising it, although not exclusively, for Police Depts., smaller, more Budget strapped ones in particular.
That is not to say that it is legal for private use. I can't imagine there isn't some regulation on it's use. Still, would be a most convenient gadget to have...
Happy Motoring!...Jim'99