Average speed cameras have had a dramatic effect on driver behaviour on an A-road in Scotland.
Before the cameras were installed on the A90 between Dundee and Stonehaven, three out of every five vehicles were exceeding the speed limit.
However, recent speed surveys carried out by Transport Scotland have found that 99 out of every 100 vehicles are now complying with the speed limit.
The average speed cameras started operating on 31 October last year.
The surveys also revealed that only one in every 5,000 vehicles now speeds at more than 10mph over the speed limit, compared to one out of every five vehicles previously.
Transport Minister Humza Yousaf welcomed the figures, saying: "These findings add to the compelling evidence that average speed cameras help to transform driver behaviour. I'm confident that this encouraging improvement in speed limit compliance along the length of the A90 will help to reduce casualties in the same way as has been achieved with similar average speed cameras on the A77 and A9.
"While the previous strategy of fixed cameras and mobile enforcement saw casualties reduce at a number of camera locations across the route, the £2m investment in average speed cameras on the A90 have had a significant positive impact over the 51.5-mile stretch of the A90 in a very short period."
Area Commander for Road Policing North, Chief Inspector Stewart Mackie, added: "Reducing excessive speed on this road directly corresponds with reducing the chances of people being injured and killed in road traffic collisions."
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