The Effectiveness of Average Speed Cameras in Great Britain

The Effectiveness of Average Speed Cameras in Great Britain

The effectiveness of speed enforcement programs and technologies in Great Britain has long been a subject of significant debate and analysis. The quest to reduce collisions and casualties on the roads has previously been supported by Government and is still a priority for the Transport Department. For all those involved in seeking effective interventions understanding how the deployment of automated enforcement technologies has contributed to reducing collisions is very important. There is a strong evidence base regarding the most common forms of enforcement technology – spot speed cameras and mobile units – but there is little evidence about the impact of average speed cameras (ASCs).

The measure used throughout this report in considering the effectiveness of ASCs is the change in injury collisions in the post-installation periods. ASC effectiveness may also be considered in terms of changes in compliance with speed limits or long-term changes in offence rates, neither of which are considered within the scope of this study