Speed cameras are not the best way of making killer roads safer, according to the Road Safety Foundation.
The pressure group has analysed the dangerous roads across the UK that have seen a dramatic reduction in the number of serious injuries and deaths – and it found speed cameras weren't the solution.
The most improved road – the A40 between Llandovery and Camarthen in Wales – slashed the number of serious accidents by a whopping 74 per cent and it didn't use any cameras to do it.
"Road improvements and resurfacing are far more cost effective at reducing road deaths than speed cameras," said a spokeswoman for the Foundation.
"Speed cameras can only be placed where there has been a consistent problem but they cost a lot more than other means of making roads safer."
The A40 improvements included traffic management, spiral road markings, resurfacing with anti-skid toppings, improved junctions and drainage, and adding village gateways.
With these improvements in place, the number of deaths and serious injuries were cut from 27 between 2003-05 to just seven between 2006-08.
These findings from the Road Safety Foundation added to recent news that the coalition government will be ending funding for speed cameras, will come as welcome news for motorists who for years have said speed cameras don't work at reducing accidents.
Dr Joanne Hill, director of the Road Safety Foundation, added: "As the road budget becomes tighter, emphasis must be on saving lives with less.
"There are practical examples of how, with attention to detail, some authorities are slashing the toll of death and serious injury on high risk stretches by as much as three-quarters.
"Simple, relatively inexpensive engineering measures, such as improvements to signing and lining, resurfacing and the layout of signals at junctions, are paying dividends and are affordable particularly when done as part of well planned routine maintenance."