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From: "Da Man"
Subject: Re: Smart traffic lights
X-Newsreader: Microsoft Outlook Express 5.50.4807.1700
Date: Fri, 03 Jan 2003 10:32:15 GMT
NNTP-Posting-Date: Fri, 03 Jan 2003 06:32:15 AST
We have them here. Supositly we have one of most advanced traffic controls
on this side of the planet, at least that's what some one stated a few years
back. I think other areas are rapidly catching up.
If you ever looked at the shape of Halifax, you'd understand why we have a
major traffic problem!
In our roads, there are sensors imbedded (loops of wire, which change
inductance when large metal objects are close to it, like cars) in our
roadways to monitor traffic and count approx. how many cars are at a stop
light. Motorcyclists sometimes have problems at our traffic lights! PID
detectors are also used sometimes.
"Robin" wrote in message
> This may be a UK thing only but traffic lights here have the habit of
> changing for no reason. Through-traffic will be moving along nicely
> and then suddenly the lights will change. Everything stops. And waits.
> Nothing happens on the green-light side, no traffic, nothing and then
> equally as suddenly the lights change back.
> Somebody could make a fortune by designing a control system that...
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