Contractors need to close some junctions on the M1 (between j13 and j15) in order to progress their work.
These closures are required for traffic sensors as part of the Motorway Incident Detection Automatic Signalling system.
This detects the levels of traffic and provides real-time information to regional control room staff who monitor the traffic conditions and safety.
The data also automatically sets and adjusts the variable traffic speed limits shown on the motorway message signs to drivers.
Various stretched of the M1 will be closed on the following dates: