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M4 Severe Cleared

M4 westbound between J19 and J20 | Westbound | Accident

12 Jun 2026, 15:28 Westbound 78 views

Incident Details

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

M4
Severe
Cleared
15:28, 12 Jun 2026

📜 Incident timeline

· First report

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 32 minutes. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 2h 52m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 3h 27m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 4h 7m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 4h 47m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 5h 22m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 5h 57m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 6h 32m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 7h 7m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 7h 42m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 8h 17m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 8h 52m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 9h 27m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 10h 7m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 10h 42m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 11h 17m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 11h 52m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 12h 27m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 13h 7m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 13h 42m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 14h 22m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 14h 57m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 15h 32m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 16h 7m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 16h 42m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 17h 17m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 17h 52m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 18h 27m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 19h 7m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 19h 47m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 20h 22m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 20h 57m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 21h 32m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 22h 27m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 23h 2m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 23h 37m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 24h 12m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 24h 47m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 25h 22m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 25h 57m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 26h 32m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 27h 7m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 27h 47m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 28h 22m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 28h 57m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 29h 32m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 30h 7m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 30h 42m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 31h 17m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 31h 57m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 32h 32m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 33h 7m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 33h 42m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 34h 17m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 34h 52m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 35h 27m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 36h 2m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 36h 37m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 37h 17m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 37h 52m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 38h 27m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 39h 2m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 39h 37m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 40h 17m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 40h 57m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 41h 32m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 42h 7m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 42h 42m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 43h 17m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 43h 57m. Monitoring continues.

· Update

Location : The M4 westbound between junctions J19 and J20 .
Lane Closures : The hard shoulder is closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

Wording as published by National Highways, recorded as it changed.

📢 Share This Incident

M4 — M4 westbound between J19 and J20 | Westbound | Accident Full details 👉 https://uktrafficupdates.uk/traffic/incidents/26085023-m4-westbound-between-j19-and-j20-westbound-accident/

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