Skip to main content

South west’s first smart motorway opens

The first smart motorway scheme in the UK’s south west has been officially launched, covering seven miles of motorway around the Almondsbury interchange and including junctions 19-20 on the M4 and junctions 15-17 on the M5. It is designed to help reduce congestion and improve safety and journey times by introducing variable speed limits and opening the hard shoulder during busy traffic periods. The improvements to the M4 and M5 use a range of technologies and operational systems to reduce congestion and
January 15, 2014 Read time: 2 mins
The first smart motorway scheme in the UK’s south west has been officially launched, covering seven miles of motorway around the Almondsbury interchange and including junctions 19-20 on the M4 and junctions 15-17 on the M5.  It is designed to help reduce congestion and improve safety and journey times by introducing variable speed limits and opening the hard shoulder during busy traffic periods.

The improvements to the M4 and M5 use a range of technologies and operational systems to reduce congestion and smooth the flow of traffic. During busy periods, traffic officers in the regional control centre at Avonmouth will set overhead message signs to inform drivers they can use the hard shoulder as an extra lane and at what speed to drive.

The project included installation of 33 new gantries, refurbishing seven existing ones, resurfacing over 14 miles of carriageway, laying over 30 miles of fibre optic cabling and constructing six emergency refuge areas.

Launching the scheme, Roads Minister Robert Goodwill said: “Every day, more than 140,000 vehicles use this section of motorway which is an essential gateway to the South West. That is why the government has invested almost US$148 million to help improve access and traffic flow on this vital route. This is the first smart motorway in the region and I’m delighted that road users and businesses will be able to benefit from the improvements earlier than planned.”

503 Highways Agency senior project manager Paul Unwin said: “The M4 and M5 scheme demonstrates how a smart and efficient solution can deliver improvements that road users need – more capacity and better management of traffic to reduce congestion and make journey times more reliable.”

Related Content

  • April 8, 2014
    UK defaults to hard shoulder running to expand motorway capacity
    Hard shoulder running has become the UK’s default response to increasing motorway capacity as Colin Sowman reports. Facing a predicted 46% increase in traffic levels by 2040 and the current economic recovery leading to more people travelling to, from and for work leaves the UK government under short- and long-term pressure to increase the capacity on the main motorway network. Particular sections of motorways are already experiencing repeated, sometimes tidal, congestion and both tight Treasury limits and t
  • April 16, 2014
    UK’s latest smart motorway goes live on M6
    The Midlands got a boost today with the launch of the latest stretch of smart motorway, making greater use of technology on the M6 near Birmingham, bringing improved journeys and less congestion. Opening the hard shoulder to traffic during the busiest times between junctions 5 and 8 on the M6 will improve journey times, especially around Birmingham and marks a milestone for the Highways Agency, after several years of investment in this section of the M6. This ten mile stretch means the benefits can now b
  • November 10, 2014
    M25 upgraded to ‘smart’ motorway
    Road users on the vast majority of the UK’s M25 will benefit from four-lane capacity now that the final section between junctions 25 and 27 has become a smart motorway. The road has been upgraded from three to four lanes in each direction, with the hard shoulder converted for use as a permanent traffic lane and enhanced on-road technology to manage traffic flow to improve the reliability of journey times, providing a boost for businesses and the wider economy.
  • November 8, 2013
    'Smart' motorways on their way to Greater Manchester
    Details of a multi-million pound project have been unveiled that will cut congestion and improve journey times on parts of the M60 and M62 in Greater Manchester. The smart motorways scheme – the first of its kind in the north-west – will be introduced on a 17-mile stretch of the network between junction 8 of the M60 near Sale and junction 20 of the M62 near Rochdale. The system will use the latest technology to monitor traffic levels, provide traffic information to road users, and ease congestion by usin