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

  • January 12, 2022
    UK ‘pauses’ smart motorway roll-out
    All-lane running motorway schemes to be halted until five years' safety data is available
  • January 27, 2020
    38 deaths on smart motorways in last five years, BBC reveals 
    The UK government has told the BBC’s Panorama investigation programme that 38 people have been killed on smart motorways in the last five years. 
  • July 19, 2013
    Government green lights road and rail improvements
    UK Transport Secretary Patrick McLoughlin has confirmed a £1.2 billion order for more state of-the art trains to transform rail travel on one of Britain’s busiest intercity routes. The 270 carriages will be manufactured in Britain by Hitachi Rail Europe as part of the government’s overall £5.8 billion Intercity Express Programme (IEP). The trains will operate on the East Coast Main Line from 2019 and will deliver significant benefits to passengers, including boosting capacity by 18 per cent, improving trai
  • July 16, 2018
    McCann participates in M1 smart motorway scheme
    Civil and electrical engineering firm McCann will help upgrade a 7.5 mile stretch of a major Midlands route as part of the M1 junction 23a – 25 smart motorway scheme. The project stems from an agreement with Highways England and is intended to reduce congestion and smooth the flow of traffic to improve travel times. Carl Lancaster, operations director for McCann, says: “The finished project will also help to minimise environmental impacts and maximise the capacity of the motorway while ensuring continued