M1 northbound at J12 closed after vehicle leaves carriageway

A severe traffic incident on the M1 northbound at junction 12 continued to disrupt motorists on Tuesday after a vehicle left the carriageway, forcing lane closures on the entry slip road and triggering congestion in the surrounding area.

The incident, currently active, is located on the northbound entry slip at J12, where emergency services responded after the vehicle veered off the road. Authorities moved to close affected lanes as a safety precaution, leading to delays for drivers attempting to join the motorway at the junction.

Traffic alerts indicate that the disruption is expected to clear between 12:45 and 13:00, with normal conditions likely to return within the same timeframe if recovery operations proceed as planned. However, delays can persist even after lanes reopen, particularly during busy daytime traffic periods.

Incidents involving vehicles leaving the carriageway often require more complex recovery efforts than standard collisions. In addition to removing the vehicle, crews may need to inspect roadside barriers, clear debris and ensure the slip road is safe before reopening it fully to traffic.

Pressure on a key motorway junction

Junction 12 serves as a critical access point for both local and long-distance traffic, meaning even partial closures can quickly impact traffic flow. With vehicles slowing on approach to the slip road, congestion can extend beyond the immediate area, affecting nearby routes and increasing journey times for commuters and freight traffic alike.

The M1 remains one of the UK’s busiest motorways, and disruptions at junctions are particularly sensitive due to merging traffic patterns and limited space for diversions. Drivers travelling northbound were advised to allow extra time and consider alternative routes where possible.

Ongoing travel impact

While authorities expect the incident to be resolved by early afternoon, drivers may continue to experience residual delays as traffic gradually returns to normal levels. Motorists are encouraged to monitor live updates and check conditions before travelling via the UK’s strategic road network updates.

The incident highlights how quickly disruption can build on major routes, with even a single vehicle leaving the carriageway capable of affecting traffic flow across a wider section of the motorway network.

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