M4 crash J4B–J5 westbound

Crash on the M4 westbound at J4B–J5 on Tuesday 3 November 2026, from 01:23. Still reported at 17:53 UK time. Timeline of reports from the motorway signs, TomTom and National Highways.

Status

Live since 01:23 (16 h 30 min)

Location

M4 westbound · J4B–J5

Reported as

Collision

At its worst

Delay ~12 min

Sources

Motorway signs ×7 · TomTom ×2 · National Highways

Timeline

1. 00:58 Motorway signs: “REPORT OF OBSTRUCTION”
2. 01:29 Motorway signs: “STRANDED VEHICLE”
3. 01:53 Motorway signs no longer show “REPORT OF OBSTRUCTION”
4. 02:53 Motorway signs: “REPORT OF OBSTRUCTION” (reported again)
5. 02:53 Motorway signs no longer show “STRANDED VEHICLE”
6. 04:46 Motorway signs: “REPORT OF OBSTRUCTION”
7. 06:24 Motorway signs no longer show “REPORT OF OBSTRUCTION”
8. 07:18 TomTom: queueing traffic, “Slow traffic”, delay ~6 min
9. 07:22 TomTom: “Queuing traffic”
10. 07:25 Motorway signs: “REPORT OF OBSTRUCTION” (reported again)
11. 07:25 Motorway signs no longer show “REPORT OF OBSTRUCTION”
12. 07:27 TomTom no longer reports it
13. 09:09 Motorway signs: “OBSTRUCTION ON SLIP ROAD”
14. 09:15 Motorway signs: “REPORT OF PEDESTRIANS”
15. 09:20 Motorway signs: “REPORT OF PEDESTRIANS”
16. 09:25 Motorway signs no longer show “REPORT OF OBSTRUCTION”
17. 09:55 Motorway signs: “REPORT OF OBSTRUCTION” (reported again)
18. 09:55 Motorway signs no longer show “REPORT OF PEDESTRIANS”
19. 09:55 Motorway signs no longer show “OBSTRUCTION ON SLIP ROAD”
20. 10:55 Motorway signs no longer show “REPORT OF PEDESTRIANS”
21. 15:35 Motorway signs: “COLLISION”
22. 15:36 National Highways: 2 of 5 lanes closed
23. 15:51 TomTom: queueing traffic, “Queuing traffic”, delay ~6 min
24. 16:00 TomTom: “Stationary traffic”
25. 16:09 TomTom: “Queuing traffic”
26. 16:13 TomTom no longer reports it
27. 16:18 TomTom: queueing traffic, “Slow traffic”, delay ~5 min (reported again)
28. 16:23 TomTom no longer reports it
29. 16:27 Motorway signs no longer show “COLLISION”
30. 16:50 National Highways: lane closure lifted

Source reports

• Overhead signs read “REPORT OF OBSTRUCTION” (2 signs; furthest along: M4 eastbound between J4B and J4).
• Overhead signs read “STRANDED VEHICLE” (3 signs; furthest along: M4 eastbound between J4B and J4).
• Queuing traffic
• Overhead signs read “REPORT OF PEDESTRIANS” (7 signs; furthest along: M4 eastbound within J4).
• Overhead signs read “OBSTRUCTION ON SLIP ROAD” (1 sign; furthest along: M4 eastbound between J4 and J3).
• Overhead signs read “REPORT OF PEDESTRIANS” (5 signs; furthest along: M4 eastbound between J4 and J3).
• Slow traffic
• Overhead signs read “COLLISION” (1 sign; furthest along: M4 westbound between J4B and J5).
• M4 westbound between J4B and J5

Other recent incidents on the M4

• M4 crash J20–J19 eastbound11:21 · cleared after 34 min
• M4 stopped traffic J3–J206:50 · cleared after 2 h 13 min
• M4 crash J10–J8 eastboundyesterday 16:33 · cleared after 1 h 18 min
• M4 crash Eastboundyesterday 09:44 · cleared after 25 min
• M4 crash Westboundyesterday 08:29 · cleared after 40 min
• M4 crash Prince of Wales Bridge eastboundyesterday 08:13 · cleared after 22 min
• M4 stopped traffic J3–J2yesterday 06:48 · cleared after 2 h 13 min
• M4 crash J10–J11 westboundSun 05:12 · cleared after 1 h
• M4 crash J12–J11 eastboundSun 04:41 · cleared after 1 h 31 min
• M4 reported crash J17–J16 eastboundSat 17:47 · cleared after 37 min

Live traffic and past incidents at M4 J4B and M4 J5.

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