TRL report 595—which is one of a regular series examining the safety performance of traffic management at major motorway works—found no significant difference in the overall personal injury accident (PIA) rate between the 17 sites with cameras and the 12 sites without cameras. There was a 1 per cent. decrease in the proportion of fatal and serious PIAs recorded at the sites with cameras when compared to the “without works” period at the same locations. The report also explains that sites with cameras had a non-works PIA rate significantly (5 per cent. level) higher than the rate for sites without cameras, illustrating that the two types of sites had different characteristics.
Overall, TRL report 595 showed that road works are becoming safer. Motorway road works sites previously had a much higher accident rate than motorways without road works. The report shows that we are now approaching a point where the risks are almost equal.
In 2005, five workers were killed and 12 were seriously injured in incidents on England’s motorways and major A roads. The Highways Agency shall therefore continue to take appropriate steps, such as using cameras to enforce temporary speed restrictions, to minimise the risks faced by the workforce as they carry out their difficult and essential work.
A more comprehensive evaluation of safety cameras, which examined some 4,000 sites, was published in December 2005, and found that there had been a significant reduction in casualties at camera sites overall.