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.”

For more information on companies in this article

Related Content

  • Magway plots retail delivery revolution
    May 8, 2020

    While most of the debate around hyperloop focuses on the potential for passenger traffic, technology firms are also exercised about how to respond to the fast-changing nature of the retail sector.

    One such company is the UK-based start-up Magway, co-founded in 2017 by former South African mining engineer Rupert Cruise and retail and technology consultant Phill Davies.

    In short, Magway moves goods from warehouses to distribution centres – or to new residential or commercial hubs - through small, high-density polyethylene pipes in pods driven by linear synchronous motors.

  • Nexar helps cities plan road improvements
    August 24, 2021
    Workzones generally unreported to mapping services, says Nexar
  • Interactive digital map shows road collision history across London
    September 22, 2015
    London’s first interactive digital collision map has been launched by the Mayor and Transport for London (TFL) as part of a continued drive to improve road safety awareness to reduce the number of casualties in the capital. The London Collision Map uses extensive data, collected by the police and held by TfL, to shine a light on road collisions in local areas. This creates a useful new way to inform road users about junctions with high collision histories and aiding improvement work in line with TfL’s co
  • Illinois Tollway looking to test connected vehicles
    February 27, 2015
    The Illinois Tollway Board of Directors is eager to participate in a federal pilot program to test new connected vehicle technology that would allow cars and trucks to share real-time information about traffic congestion and roadway conditions to help reduce crashes. The Tollway has applied to participate in the program which would allow its federal government contractor, CDM Smith Federal, to test the new technology on the Jane Addams Memorial Tollway (I-90), which is being rebuilt at a cost of US$2.5 bill