variable message signs (vms), traffic queue detection loops and closed circuit tv (cctv) were installed at a cost of £50m during 2009 to 2010 both carriageways between junction 52 (claydon) and junction 55 (copdock) were refurbished during 2010 at a cost of £9 million. work was being carried out a year earlier than scheduled as part of a uk government’s fiscal stimulus package.