M4 crash J10–J11 westbound

Cleared Cleared at 18:30 on 6 Oct 2026, after 1 h 9 min.

Crash on the M4 westbound at J10–J11 on Tuesday 6 October 2026, from 17:21. Cleared at 18:30 after 1 h 9 min. Timeline of reports from the motorway signs and TomTom.

1. !

   M4 westbound · J10–J11

   Collision

   Tue 17:21–Tue 18:30 (cleared after 1 h 9 min) · delay ~3 min

   Motorway signs ×3 · TomTom ×2

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Timeline

1. Tue 17:21 Motorway signs: “REPORT OF COLLISION”
2. Tue 17:24 Motorway signs: “COLLISION [HCA0]”
3. Tue 17:25 Motorway signs: “COLLISION”
4. Tue 17:38 TomTom: broken-down vehicle, “Broken down vehicle”
5. Tue 18:00 Motorway signs no longer show “REPORT OF COLLISION”
6. Tue 18:01 TomTom: broken-down vehicle, “Slow traffic, Broken down vehicle”, delay ~3 min
7. Tue 18:19 TomTom no longer reports it
8. Tue 18:30 Motorway signs no longer show “COLLISION [HCA0]”
9. Tue 18:30 Motorway signs no longer show “COLLISION”
10. Tue 18:30 All clear: no source reports it any more

What the sources said

• Overhead signs read “REPORT OF COLLISION” (11 signs; furthest along: M4 westbound between J10 and J11).
• Broken down vehicle
• Overhead signs read “COLLISION [HCA0]” (3 signs; furthest along: M4 westbound between J10 and J11).
• Overhead signs read “COLLISION” (3 signs; furthest along: M4 westbound between J10 and J11).
• Slow traffic, Broken down vehicle

Other recent incidents on the M4

• M4 crash J6–J5 eastbound · 07:10, cleared after 1 h 9 min
• M4 crash J3 eastbound · yesterday 18:51, cleared after 1 h 2 min
• M4 closed J19 westbound · yesterday 07:57, cleared after 4 h 56 min
• M4 delays J3–J2 · yesterday 06:41, cleared after 1 h 36 min
• M4 reported crash J15–J16 westbound · Sat 12:09, cleared after 1 h 5 min
• M4 crash J3–J2 eastbound · Sat 09:28, cleared after 45 min
• M4 crash J8–J7 eastbound · Fri 20:12, cleared after 1 h 50 min
• M4 reported crash J15–J14 eastbound · Fri 19:27, cleared after 43 min
• M4 stopped traffic J20–J19 · Fri 15:47, cleared after 1 h 10 min
• M4 crash J11–J12 westbound · Fri 15:06, cleared after 11 h 35 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.