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Active Traffic Management

M42 Background Information

Construction on the M42 began in Summer 2003. It was introduced in three phases, with advisory speed limits coming on board in Winter 2004. These speed limits became mandatory in Winter 2005 and hard shoulder running began in September 2006.

The M42 between 3A and 7 was chosen because of its strategic importance as it links the M40, M6 and M5 motorways. The route carries up to 140,000 vehicles a day including long distance national traffic, local traffic using business parks and residential areas and seasonal traffic using Birmingham International Airport. The motorway also experienced heavy congestion at points where traffic leaves and joins the motorway and an above average accident rate, particularly between junctions 5 and 6.

Two Statutory Instruments were drafted to modify existing regulations to allow the ATM project to succeed. These regulation changes became law on 27 July 2005.