It’s being reported that the length of the UK road network covered by permanent average-speed cameras has more than doubled since 2013.
Research obtained by the BBC’s The One Show found 51 stretches of road are permanently managed by the cameras, covering 263 miles in total.
It says schemes range from less than a mile on Tower Bridge in London, to 99 miles on the A9 between Dunblane and Inverness.
The devices – which were first introduced in the UK in 2000, in Nottingham – covered a total distance of 127 miles in 2013.
However, the BBC says that research conducted for the RAC Foundation found more than 130 miles of roads have since had the cameras installed on them, with 12 systems installed last year alone.
The new data excludes sites where average-speed cameras are deployed temporarily, such as to monitor speed limits through motorway roadworks.