Cameras for A30 roadworks between Loggans Moor and Hayle. 40 mph limit.
news.bbc.co.uk/1/hi/england/cornwall/6258517.stm
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Careful here.
If the cameras are on gantries they are probably SPECS. These only measure average speed of a vehicle if it enters and leaves the SPECS gauntlet in the same lane.
However, if the camera are on posts, they are probably PIPS and these can measure the average speed of vehicles whichever lane they enter and leave the gauntlet in.
HJ
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