M4 crash J30 westbound

Crash on the M4 westbound at J30 on Tuesday 10 November 2026, from 07:57. Still reported at 08:43 UK time. Timeline of reports from Traffic Wales.

Status

Live since 07:57 (45 min)

Location

M4 westbound · J30

Reported as

Incident

Sources

Traffic Wales ×2

Timeline

1. 07:47 Traffic Wales: collision
2. 08:36 Traffic Wales: queueing traffic
3. 08:42 Traffic Wales: now says incident, “Now clear : Westbound : J32 Coryton to J33 Capel Llanilltern”

Source reports

• M4 : Now clear : Westbound : J32 Coryton to J33 Capel Llanilltern
• M4 : Westbound : J30 Cardiff Gate : Congestion : offslip : Delays possible

Other recent incidents on the M4

• M4 reported crash J13–J12 eastbound08:00 · cleared after 38 min
• M4 crash Eastbound07:57 · cleared after 45 min
• M4 crash J34 eastbound07:24 · Live
• M4 reported crash J15–J14 eastboundyesterday 22:41 · cleared after 54 min
• M4 crash J8–J10 westboundyesterday 18:25 · cleared after 46 min
• M4 crash J18 eastboundyesterday 12:42 · cleared after 7 h 23 min
• M4 crash J25 westboundyesterday 08:30 · cleared after 42 min
• M4 crash Eastboundyesterday 05:51 · cleared after 16 min
• M4 crash Eastboundyesterday 05:37 · cleared after 20 min
• M4 crash J4 westboundSun 22:30 · cleared after 4 h 38 min

Live traffic and past incidents at M4 J30.

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