Skip to main content

Highways Agency plans to increase capacity of M4

The UK Highways Agency is holding a series of public exhibitions to inform road users, local residents and businesses about proposals to transform the M4 into one of the longest stretches of ‘smart motorway’ in England by 2021. The improvement, on a 32-mile stretch between junction 3 at Hayes in London, and junction 12 at Theale in Berkshire, would increase capacity, improve journey reliability and maintain safety. The proposals are part of the Government’s investment into England’s motorways and majo
March 19, 2014 Read time: 2 mins
The 1841 UK Highways Agency is holding a series of public exhibitions to inform road users, local residents and businesses about proposals to transform the M4 into one of the longest stretches of ‘smart motorway’ in England by 2021.

The improvement, on a 32-mile stretch between junction 3 at Hayes in London, and junction 12 at Theale in Berkshire, would increase capacity, improve journey reliability and maintain safety.

The proposals are part of the Government’s investment into England’s motorways and major A-roads, which will see up to US$6.7 billion a year pumped into improving the roads by 2021, underpinning economic growth and high quality jobs across the region.

As part of the proposals, there would be 64 miles of new traffic lane taken from the existing hard shoulder, increasing capacity.   The initial scheme design also includes 131 new gantries, with 32 existing gantries remaining, while eleven bridges would be rebuilt to provide space for the additional traffic lane and provide safe journeys over the M4 for decades to come. In addition, 32 refuge bays are proposed alongside the carriageway for use by drivers in an emergency.

Subject to gaining consent, construction would be carefully planned to be carried out in phases from 2016.

Lynne Stinson, Highways Agency project manager said: “The M4 is an important corridor in and out of London for those who live and work in Buckinghamshire and Berkshire, as well as those further afield in the South West and Wales, with around 130,000 vehicles using this stretch every day.

“Based on proven benefits elsewhere, we have produced outline proposals that would see 32 miles of the M4 transformed into a ‘smart motorway’; we’re planning extra capacity by converting the hard shoulder into an additional traffic lane and introducing variable mandatory speed limits displayed overhead to help smooth the flow of traffic and reduce congestion, and to provide traffic information, with safety bays in place to maintain safety.”

Related Content

  • Telent wins WiFi deal for National Highways
    December 9, 2024
    Contract includes infrastructure for 130 sites with English motorway agency
  • London’s first segregated cycle superhighway planned
    July 9, 2014
    Thousands of cyclists will no longer have to use the Vauxhall gyratory, one of the most threatening in London, under plans published today for central London’s first segregated cycle superhighway. A continuous two-way and separated east-west track will be built from Kennington Oval to Pimlico, through the gyratory and across Vauxhall Bridge, breaking one of the most significant barriers to cycling in the capital. There will also be substantially more space for pedestrians, with around one square kil
  • Active traffic management increases safety and capacity
    February 2, 2012
    WSDOT is deploying Active Traffic Management in order to increase safety and capacity on its strategic roads. WSDOT's Patricia Michaud elaborates
  • Work begins on Warrington motorway trial to cut congestion
    October 28, 2016
    Work on a US$8.5 million (£7 million) pilot scheme to cut congestion along the M62 near Warrington in Cheshire, UK is to start next month. Highways England is delivering the innovative project at Croft Interchange to give drivers smoother and more reliable journeys along the eastbound M62, one of the busiest commuter congestion hotspots in the region. From next summer, smart motorway technology, such as electronic information signs and variable mandatory speed limits on the M62, will be used alongside