Hello, I just read and got bargain cars from this site but today seek help.
The other day going along the motorway, there are tarmac type, about inch wide lines that are rectangular in shape and about 6 foot wide. On motorways that have them, they appear about every half to one mile.
I've also noticed them by traffic lights but in a V shape - what are they please?
I assume you meant "mile" and not some novel measurement that I haven't heard of.. so I've changed it - PU
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Underneath the tarmac lines are sensor wires buried in the road surface. Used to measure traffic density and traffic control (traffic lights, variable speed limits, etc)
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TourVanMan TM < Ex RF >
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I believe the lines by traffic lights are where detector wires are installed. These allow the control system for the lights to to be set to respond to traffic presence, so optimising the switching sequence.
The motorway system may be a similar traffic presence/speed detection system.
JS
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I knew I'd get a quick response - thanks, makes sense
:)
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lights to to be set to respond to traffic presence so optimising the switching sequence.
I think you mean so that the lights can turn to red just as you approach, or will let you through but then ensure that the next set of lights are red.
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If you come up to a set of lights at red and there is a car stationary near the lights,stop your car over the traffic sensing wires as far away from the lights as you can find-some traffic lights have several sets-the electronics then think the side road has a long tailback and changes in your favour.
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