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

  • London may trial Dutch-style roundabouts
    April 30, 2013
    Roundabouts similar to those used in the Netherlands, which separate cyclists from cars and give them priority, could be used in London as early as next year, subject to government approval, according to Transport for London (TfL). TfL has begun a major cycle safety research project to trial new and innovative junction layouts and traffic technology that, if successful, could be introduced in London and potentially more widely across the UK. The trials, which are being carried out for TfL by the Transport R
  • Highways England gets a single view of severe weather information
    October 25, 2016
    Highways England has launched a US$6 million (£5 million) integrated weather information system developed by the Civica Group, to enable better management of the nation’s main roads during times of severe weather and to support its aims of keeping the road network free-flowing and safe. Developed by IPL, part of Civica’s digital solutions business, and incorporating Exactrak vehicle navigation and reporting technology, the severe weather information service (SWIS) brings together critical information o
  • Weigh in Motion gets smarter
    January 4, 2023
    Weigh in Motion technology is at the forefront of protecting road surfaces and helping enforcement activity – but could it also play a key role in the development of Smart Cities?
  • Cubic’s holistic view of traffic management
    May 25, 2022
    How can cities and transit agencies ease congested roadways? Andy Taylor of Cubic Transportation Systems suggests it would help to take a more holistic view of the problem