M4 stopped traffic J20–J21

Stopped traffic on the M4 at J20–J21 on Wednesday 11 November 2026, from 07:29. Cleared at 08:52 after 1 h 23 min. Timeline of reports from TomTom.

Status

Cleared 08:52 on 11 Nov 2026, after 1 h 23 min

Location

M4 J20–J21

Reported as

Queueing traffic

At its worst

Stationary traffic · delay ~25 min

Sources

TomTom ×2

Timeline

1. 07:29 TomTom: queueing traffic, “Stationary traffic”, delay ~10 min
2. 07:33 TomTom: “Queuing traffic”
3. 07:56 TomTom: “Stationary traffic”
4. 08:14 TomTom: “Queuing traffic”
5. 08:24 TomTom: queueing traffic, “Queuing traffic”, delay ~11 min
6. 08:33 TomTom: delay now ~6 min (was ~11), “Slow traffic”
7. 08:37 TomTom: “Queuing traffic”
8. 08:52 TomTom no longer reports it
9. 08:52 All clear: no source reports it any more

Source reports

• Queuing traffic

Other recent incidents on the M4

• M4 crash J11–J10 eastbound07:50 · Live
• M4 stopped traffic J4–J3 eastbound06:44 · Live
• M4 crash J18yesterday 19:23 · cleared after 46 min
• M4 crash J5–J4B eastboundyesterday 18:15 · cleared after 57 min
• M4 closed J15–J16yesterday 17:50 · cleared after 15 min
• M4 crash J19–J20 westboundyesterday 16:33 · cleared after 1 h 19 min
• M4 reported crash J13–J12 eastboundyesterday 08:00 · cleared after 38 min
• M4 crash Westboundyesterday 07:57 · cleared after 2 h 30 min
• M4 crash Eastboundyesterday 07:57 · cleared after 45 min
• M4 crash J35 eastboundyesterday 07:27 · cleared after 2 h 55 min

Live traffic and past incidents at M4 J20 and M4 J21.

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