M4 crash J13–J12 eastbound

Crash on the M4 eastbound at J13–J12 on Monday 28 September 2026, from 21:22. Cleared at 01:09 after 3 h 46 min. Timeline of reports from National Highways, TomTom and the motorway signs.

Status

Cleared 01:09 on 29 Sept 2026, after 3 h 46 min

Location

M4 eastbound · J13–J12

Reported as

Collision

Lanes

Road closed

At its worst

Stationary traffic

Sources

National Highways ×3 · TomTom · Motorway signs

Timeline

1. Mon 21:22 National Highways: road closed
2. Mon 21:34 National Highways: road closed
3. Mon 21:57 TomTom: collision, “Stationary traffic, Accident”, delay ~20 min
4. Mon 22:01 TomTom no longer reports it
5. Mon 22:59 National Highways: 3 of 4 lanes closed
6. Mon 22:59 Motorway signs: “COLLISION”
7. Mon 23:06 National Highways: road reopened
8. Mon 23:06 All clear: no source reports it any more
9. Mon 23:26 National Highways: 1 of 4 lanes closed (was 3)
10. Mon 23:52 National Highways: lane closure lifted
11. Tue 01:09 Motorway signs no longer show “COLLISION”
12. Tue 01:09 All clear: no source reports it any more

Source reports

• M4 eastbound within J12
• Stationary traffic, Accident
• Overhead signs read “COLLISION” (1 sign; furthest along: M4 eastbound within J12).

Other recent incidents on the M4

• M4 crash J18–J1917:45 · cleared after 3 h 12 min
• M4 reported crash J19–J20 westbound17:27 · cleared after 1 h 26 min
• M4 crash Both directions08:08 · cleared after 1 h 5 min
• M4 stopped traffic J3 westbound06:48 · cleared after 3 h 3 min
• M4 crash J6 westboundyesterday 15:41 · cleared after 1 h 35 min
• M4 crash J10–J8 eastboundyesterday 07:50 · cleared after 2 h 6 min
• M4 stopped traffic J20–J21yesterday 07:29 · cleared after 1 h 23 min
• M4 stopped traffic J4–J3 eastboundyesterday 06:44 · cleared after 3 h 3 min
• M4 crash J18Tue 19:23 · cleared after 46 min
• M4 crash J5–J4B eastboundTue 18:15 · cleared after 57 min

Live traffic and past incidents at M4 J13 and M4 J12.

The sources don't report causes or injuries, so neither does this page. Times are UK time. For alerts, follow @motorways.me on Bluesky.