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

  • Progress in talks on new Sydney toll road
    October 10, 2013
    Toll roads operator Transurban says it has made good progress in its talks with the New South Wales government on a US$2.5 billion tunnel proposal for Sydney's north. The proposed project would be a tolled motorway linking the M1 Pacific Motorway, formerly the F3 freeway, at Wahroonga to the M2 toll road at West Pennant Hills. The project involves the construction of new eight kilometre tunnel, which would be the longest tunnel of its kind in Australia. “We have made significant progress in our disc
  • New opportunities in a data-rich future
    March 19, 2014
    Jason Barnes looks at where the detection and monitoring sector is heading. In the future, there will be no such thing as an un-instrumented road. Just a short time ago, that could have been a quote from a high-level policy document but with the first arrivals of vehicles with 802.11p connectivity – the door-opener to Vehicle-to-X (V2X) applications – it’s a statement which has increasing validity. The technology which uses our roads will also provide information on road conditions but V2X isn’t the only
  • Missouri’s Road to Tomorrow provides ITS answers
    December 22, 2015
    Andrew Bardin Williams looks at Missouri’s plans to become America’s ITS testbed The state of Missouri launched its Road to Tomorrow initiative earlier this summer at the ITS America Annual Meeting and Expo in Pittsburgh, rolling out the welcome mat for transportation officials to try out new, innovative ITS technologies in the field.
  • Singapore plans changes to transit system
    June 13, 2018
    Singapore has the third-highest population density in the world and the numbers are continuing to grow. The government knows that transit is vital: David Crawford investigates the city state’s Smart Nation strategy. Transport is the most important of the five domains identified as the pillars of Singapore's far-reaching Smart Nation strategy, launched in November 2014 by prime minister Lee Hsien Loong with the aim of reaching fulfilment by 2024. Roads account for 12% of the island republic's 719km2 land ar