Today (30th September 2016) the RAC Foundation have published research carried out by Road Safety Analysis and Professor Richard Allsop that reviews the effectiveness of Average Speed Cameras (ASC). The project has taken just of a year to complete and offers an independent review of collision records over 25 years at 50 sites in Great Britain.
The full report can be reviewed at the RAC Foundation website
The study had three main objectives:
To create a national database/inventory of ASC sites of various kinds in Great Britain
To establish a suitably large and appropriate control group of sites to enable an understanding of the difference in collision reduction between potential ASC sites with and without such enforcement
To establish levels of occurrence of collisions before and after ASC installation (with consideration given to site-selection period, pre-installation and post-installation periods)