M4 crash J11–J12 westbound

Live Still reported at 17:57 UK time, since 15:06 (2 h 51 min).

Crash on the M4 westbound at J11–J12 on Friday 9 October 2026, from 15:06. Still reported at 17:57 UK time. Timeline of reports from TomTom, National Highways and the motorway signs.

1. !

   M4 westbound · J11–J12

   Collision

   2 of 4 lanes closed · since 15:06 (2 h 51 min) · delay ~23 min · queue 5.5 mi

   TomTom · National Highways ×5 · Motorway signs ×2

See the M4 on the live map M4 traffic now

Timeline

1. 15:06 Motorway signs: “COLLISION”
2. 15:07 National Highways: 1 of 4 lanes closed
3. 15:09 Motorway signs: “INCIDENT [HCA2]”
4. 15:33 TomTom: broken-down vehicle, “Slow traffic, Broken down vehicle”, delay ~4 min
5. 15:43 TomTom: “Queuing traffic, Broken down vehicle”
6. 15:57 TomTom: “Slow traffic, Broken down vehicle”
7. 16:06 TomTom: “Queuing traffic, Broken down vehicle”
8. 16:16 TomTom: now says queueing traffic, “Slow traffic”
9. 16:20 TomTom: now says broken-down vehicle, “traffic, Broken down vehicle”
10. 16:29 TomTom no longer reports it
11. 16:39 TomTom: broken-down vehicle, “Stationary traffic, Broken down vehicle”, delay ~9 min (reported again)
12. 16:47 National Highways: 2 of 4 lanes closed
13. 16:47 National Highways: 2 of 4 lanes closed
14. 16:48 TomTom: now says queueing traffic, “Queuing traffic”
15. 16:52 TomTom: now says broken-down vehicle, “Slow traffic, Broken down vehicle”
16. 16:57 TomTom: “Queuing traffic, Broken down vehicle”
17. 17:01 TomTom: “Stationary traffic, Broken down vehicle”
18. 17:08 National Highways: lane closure lifted
19. 17:24 TomTom: “Queuing traffic, Broken down vehicle”
20. 17:29 TomTom: “Stationary traffic, Broken down vehicle”
21. 17:56 TomTom: now says queueing traffic, “Stationary traffic”

What the sources said

• Stationary traffic
• M4 westbound between J11 and J12
• Overhead signs read “INCIDENT [HCA2]” (1 sign; furthest along: M4 westbound within J11).
• Overhead signs read “COLLISION” (2 signs; furthest along: M4 westbound between J11 and J12).

Other recent incidents on the M4

• M4 stopped traffic J20–J19 · 15:47, cleared after 1 h 10 min
• M4 crash J8–J10 westbound · 12:30, cleared after 2 h 45 min
• M4 reported crash J12–J11 eastbound · 06:27, cleared after 40 min
• M4 stopped traffic J3–J2 · yesterday 06:44, cleared after 3 h 26 min
• M4 reported crash J14–J15 westbound · Wed 14:02, cleared after 46 min
• M4 closed J13–J14 westbound · Tue 20:53, cleared after 7 h 12 min
• M4 closed J12–J13 westbound · Tue 20:53, cleared after 7 h 12 min
• M4 closed J16–J17 westbound · Tue 20:53, cleared after 7 h 12 min
• M4 closed J15–J16 westbound · Tue 20:53, cleared after 7 h 12 min
• M4 closed J20–J21 westbound · Tue 20:27, cleared after 7 h 37 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.