Skip to main content

M25 becomes UK’s smartest motorway

Final preparations are taking place for the M25 to become England’s first smart motorway, improving journeys and boosting the economy. Two sections of the motorway opening this month and next are between junctions 23 and 25 in Hertfordshire and between junctions 5 and 6/7 on the Kent/Surrey border. For the first time on a motorway scheme in England the hard shoulder will be used as a permanent traffic lane, with enhanced technology to manage traffic flow to improve the reliability of journey times.
April 11, 2014 Read time: 2 mins
Final preparations are taking place for the M25 to become England’s first smart motorway, improving journeys and boosting the economy.

Two sections of the motorway opening this month and next are between junctions 23 and 25 in Hertfordshire and between junctions 5 and 6/7 on the Kent/Surrey border.

For the first time on a motorway scheme in England the hard shoulder will be used as a permanent traffic lane, with enhanced technology to manage traffic flow to improve the reliability of journey times.

The improvements, spanning some 20 miles of the M25, are part of a new generation of technology-driven improvements on the strategic road network known as ‘smart motorways’.

The advance on the M25, which will be repeated on other motorways, is the permanent conversion of the hard shoulder for traffic, providing 24/7 extra capacity.

John Martin, 503 Highways Agency senior project manager said: “Around US$3 billion is being invested into roads in the south east by 2021 with 145 new lane miles of capacity added. Most of the work to improve journeys on these stretches in Hertfordshire and Kent/Surrey is complete and we are now testing the new technology. “We are delighted to be able to open the first part of the northern section ahead of the planned full completion in December 2014. The southern section is completing significantly earlier than planned due to rescheduling of the programme.

“Soon the smart motorway will be complete and we are now asking drivers to get smart and find out more about how to use it, the types of signs and signals they will see and what to do in the event of a breakdown. “This really is the start of a new age on England’s motorways.”

Related Content

  • AECOM appointed technical partner for A303 improvements scheme
    April 12, 2017
    Global infrastructure services firm AECOM has secured an eight-year contract with Highways England to work as its technical partner for the major A303 Amesbury to Berwick Down improvements scheme. AECOM, working with its supply chain partners Mace and Mouchel, will deliver a range of multidisciplinary services to support all phases of the project, which will upgrade the eight-mile stretch of the A303 from single to dual carriageway to create a high-quality, reliable route to the south west, improve safet
  • Calls for smart motorway halt grow louder
    November 5, 2021
    UK transport select committee says hard shoulder motorways “apparently confuse” drivers
  • Highways England HQ now open
    March 20, 2015
    The new headquarters of Highways England, the company that will run motorways and major A roads, has been opened today by Transport Secretary Patrick McLoughlin. The new company, which replaces the Highways Agency on 1 April, marks a step change in how England’s roads are maintained and managed and will be responsible for delivering more than US$22 billion of investment by 2021. The new company will have longer-term funding to be able to plan ahead and invest in skills and equipment to speed up essential wo
  • Smart motorways 'not safer in every way' says UK gov
    March 13, 2020
    Smart motorways are not always as safe - or safer - than conventional motorways, the UK government has acknowledged.