M4 crash Both directions

Crash on the M4 at Both directions on Thursday 12 November 2026, from 08:08. Cleared at 09:13 after 1 h 5 min. Timeline of reports from Traffic Wales and TomTom.

Status

Cleared 09:13 on 12 Nov 2026, after 1 h 5 min

Location

M4 Both directions

Reported as

Collision

Sources

Traffic Wales · TomTom

Timeline

1. 08:00 Traffic Wales: queueing traffic
2. 08:13 TomTom: collision, “Stationary traffic, Incident”, delay ~15 min
3. 08:19 TomTom no longer reports it
4. 08:38 Traffic Wales: now says incident, “Now clear : Both directions : J30 Cardiff Gate to J32 Coryton”
5. 08:48 Traffic Wales no longer reports it
6. 08:48 All clear: no source reports it any more
7. 09:03 Traffic Wales: incident (reported again)
8. 09:13 Traffic Wales no longer reports it
9. 09:13 All clear: no source reports it any more

Source reports

• M4 : Now clear : Both directions : J30 Cardiff Gate to J32 Coryton
• Stationary traffic, Incident

Other recent incidents on the M4

• 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
• M4 closed J15–J16Tue 17:50 · cleared after 15 min
• M4 crash J19–J20 westboundTue 16:33 · cleared after 1 h 19 min
• M4 reported crash J13–J12 eastboundTue 08:00 · cleared after 38 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.