AVERAGE speed cameras are increasingly popular for catching drivers speeding without giving them the chance to quickly hit the breaks before a flash.
Our run down below reveals all you need to know about average speed cameras, which now operate on over 250miles of UK roads.
What are average speed cameras?
Average speed cameras check your speed between two points in a road using automatic number plate recognition.
They use automatic number plate recognition
The cameras are known as SPECS and were introduced into the UK in 1999.
A set of small cameras – painted yellow – are positioned on an extended lamppost, followed by another set anywhere between 200m and 10km further down the road.
And they can appear on dual carriageways, motorways, during roadworks or smaller roads.
If this speed is over the limit you'll be fined £100 and given three penalty points – even if you're going below the allowed speed at the point you pass the camera.
The cover of darkness isn't a free pass to speed on through those motorway roadworks – even if there's nobody working and the road is clear.
Average speed cameras have infra-red so they work at night and in any weather as well.
SPECS takes its name from Speed Check Services Limited, who originally manufactured the cameras.
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