M1 junctions 23a to 25: Smart Motorway
As part of our Roads Investment Strategy, we are converting the M1 into a controlled motorway between junctions 23a and 24. Between junctions 24 and 25, we will have all lane running - which means the hard shoulder will be permanently converted into a traffic lane.
This section will be a smart motorway, using pioneering technology to monitor traffic levels. We’ll be able to change the speed limit to smooth traffic flow and manage congestion, activate warning signs to alert drivers to changes up ahead, and close lanes if required for emergency vehicles.
We’ll place new CCTV cameras and electronic information signs and signals on gantries, to keep drivers informed of changing speed limits and problems on the road ahead. We’ll also create emergency refuge areas and install emergency roadside telephones.
All of which will, overall, make journeys safer, faster and more reliable. By improving the capacity of the motorway, we’ll also support economic growth.