M1 crash J23A northbound
Cleared Cleared at 14:01 on 2 Oct 2026, after 77 h 51 min.
Crash on the M1 northbound at J23A on Tuesday 29 September 2026, from 08:10. Cleared at 14:01 after 77 h 51 min. Timeline of reports from the motorway signs and TomTom.
M1 northbound · J23A
Collision
Road closed · Tue 08:10–14:01 (cleared after 77 h 51 min) · delay ~4 min · queue 3.3 mi
Motorway signs ×2 · TomTom ×3
See the M1 on the live map M1 traffic now
Timeline
- Motorway signs: “REPORT OF COLLISION”
- Motorway signs no longer show “REPORT OF COLLISION”
- All clear: no source reports it any more
- Motorway signs: “REPORT OF COLLISION” (reported again)
- Motorway signs: “COLLISION SLOW DOWN”
- TomTom: road closed
- TomTom: queueing traffic, “Stationary traffic”, delay ~7 min
- TomTom: collision, “Accident”
- Motorway signs no longer show “REPORT OF COLLISION”
- TomTom: “Queuing traffic”
- TomTom: “Accident, Lane closed”
- TomTom: “Slow traffic”
- TomTom no longer reports it
- Motorway signs no longer show “COLLISION SLOW DOWN”
- All clear: no source reports it any more
What the sources said
- Overhead signs read “REPORT OF COLLISION” (7 signs; furthest along: M1 northbound within J23A).
- Closed
- Slow traffic
- Accident, Lane closed
- Overhead signs read “COLLISION SLOW DOWN” (1 sign; furthest along: M1 northbound between J23 and J23A).
Other recent incidents on the M1
- M1 crash J21A–J22 northbound
- M1 crash J22–J23 northbound
- M1 crash J21A–J21 southbound
- M1 reported crash J26–J27 northbound
- M1 crash J31–J30 northbound
- M1 crash J11–J11A northbound
- M1 crash J8–J9 northbound
- M1 crash J20–J21 northbound
- M1 crash J27–J26 southbound
- M1 crash J14–J13 southbound
About this page
This page shows what the data sources reported about this event and when, merged from every source that reported it at the same place. It doesn't say what caused it or whether anyone was hurt: no source reports that. Times are UK time. For live alerts, follow @motorways.me on Bluesky.