M3 crash J11–J12 westbound

Live Still reported at 17:22 UK time, since 15:45 (1 h 37 min).

Crash on the M3 westbound at J11–J12 on Tuesday 29 September 2026, from 15:45. Still reported at 17:22 UK time. Timeline of reports from TomTom and the motorway signs.

1. !

   M3 westbound · J11–J12

   Collision

   since 15:45 (1 h 37 min) · delay ~7 min · queue 4.3 mi

   TomTom · Motorway signs ×2

See the M3 on the live map M3 traffic now

Timeline

1. 15:45 Motorway signs: “REPORT OF COLLISION”
2. 16:11 TomTom: queueing traffic, “Stationary traffic”, delay ~9 min
3. 16:24 TomTom: “Queuing traffic”
4. 16:29 TomTom: “Stationary traffic”
5. 16:34 TomTom: “Queuing traffic”
6. 16:42 Motorway signs no longer show “REPORT OF COLLISION”
7. 16:47 TomTom: “Stationary traffic”
8. 16:52 TomTom: “Queuing traffic”
9. 17:15 TomTom: “Slow traffic”

What the sources said

• Slow traffic
• Overhead signs read “REPORT OF COLLISION” (5 signs; furthest along: M3 westbound between J11 and J12).
• Overhead signs read “REPORT OF COLLISION” (1 sign; furthest along: M3 westbound between J10 and J11).

Other recent incidents on the M3

• M3 crash J4–J4A westbound · Sun 11:21, cleared after 1 h 21 min
• M3 crash J10–J11 · Sat 11:04, cleared after 2 h 55 min
• M3 crash J2–J3 westbound · Thu 15:40, cleared after 71 h 51 min
• M3 crash J3–J2 eastbound · 23 Sept 2026 16:36, cleared after 101 h 56 min

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.