Thread: Camera like sensors on top of traffic lights
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Old August 16th 03, 06:48 AM posted to uk.transport.london,uk.rec.cycling
Peter Lawrence Peter Lawrence is offline
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Default Camera like sensors on top of traffic lights
On Thu, 14 Aug 2003 23:30:12 +0100, Robert Woolley
wrote:


They are detectors which use microwaves to 'see traffic' and adjust
accordingly. Microwaves get reflected by moving metal objects. They
don't work well if traffic is generally very slow moving.

So why does anyone think they are useful in London?

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Peter Lawrence
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