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From: "Graham Holloway"
Subject: Re: Smart traffic lights
Date: Fri, 3 Jan 2003 11:13:35 -0000
NNTP-Posting-Date: Fri, 3 Jan 2003 11:14:45 +0000 (UTC)
X-Newsreader: Microsoft Outlook Express 6.00.2800.1106
"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...
I've noticed this at a number of junctions. In very low traffic flow
situations and with no pedestrians about. I suspect the only reasonable
justification is random self testing.
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