M4 stopped traffic J20–J21

Stopped traffic on the M4 at J20–J21 on Thursday 22 October 2026, from 07:02. Cleared at 07:53 after 51 min. Timeline of reports from TomTom.

Status

Cleared 07:53 on 22 Oct 2026, after 51 min

Location

M4 · J20–J21

Reported as

Queueing traffic

At its worst

Stationary traffic · delay ~25 min

Sources

TomTom

Timeline

1. 07:02 TomTom: queueing traffic, “Stationary traffic”, delay ~10 min
2. 07:06 TomTom: delay now ~16 min (was ~10)
3. 07:11 TomTom: delay now ~21 min (was ~16)
4. 07:34 TomTom: delay now ~17 min (was ~25)
5. 07:38 TomTom: delay now ~11 min (was ~17), “Queuing traffic”
6. 07:43 TomTom: “Slow traffic”
7. 07:48 TomTom: “Queuing traffic”
8. 07:53 TomTom no longer reports it
9. 07:53 All clear: no source reports it any more

Source reports

• Queuing traffic

Other recent incidents on the M4

• M4 crash J35 westboundyesterday 22:53 · cleared after 1 h 25 min
• M4 closed J20–J21 westboundyesterday 20:45 · cleared after 6 h 52 min
• M4 crash J10–J8 eastboundyesterday 13:16 · cleared after 36 min
• M4 crash J18yesterday 07:27 · cleared after 23 min
• M4 crash J19–J20 westboundyesterday 06:54 · cleared after 2 h 33 min
• M4 closed J20–J21 westboundTue 21:17 · cleared after 7 h 26 min
• M4 crash J6–J5 eastboundTue 14:41 · cleared after 1 h 42 min
• M4 stopped traffic J13–J12 eastboundTue 12:38 · cleared after 1 h 49 min
• M4 stopped traffic J13–J12Tue 12:04 · cleared after 28 min
• M4 crash J10 westboundTue 11:57 · cleared after 2 h 5 min

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