Work on a proposed smart motorway upgrade on the M4 could get underway in 2016.
The £700 million project, which will see the M4 upgraded between London and Berkshire, is currently under public consultation.
According to the Highways Agency, the smart motorway proposal on the M4 will use the latest technology to improve journeys by monitoring traffic flow and setting speed limits accordingly to keep traffic moving smoothly, instead of continually stopping and starting. The proposal also involves converting the hard shoulder permanently to a traffic lane to create the extra capacity necessary to support economic growth. Information about road conditions and speed limits will be displayed to drivers on electronic road signs.
If the Transport Secretary approves the scheme construction work could start in September 2016 and will take over five years to complete.