M4 crash J4–J4B westbound

Crash on the M4 westbound at J4–J4B on Friday 6 November 2026, from 12:02. Cleared at 12:44 after 42 min. Timeline of reports from the motorway signs.

Status

Cleared 12:44 on 6 Nov 2026, after 42 min

Location

M4 westbound · J4–J4B

Reported as

Collision

Sources

Motorway signs

Timeline

1. 12:02 Motorway signs: “COLLISION [HCA0]”
2. 12:44 Motorway signs no longer show “COLLISION [HCA0]”
3. 12:44 All clear: no source reports it any more

Source reports

• Overhead signs read “COLLISION [HCA0]” (1 sign; furthest along: M4 westbound between J4 and J4B).

Other recent incidents on the M4

• M4 crash J5–J4B eastbound12:02 · cleared after 42 min
• M4 closed J18–J1700:45 · cleared after 27 min
• M4 crash J6 eastboundyesterday 22:04 · cleared after 12 h 9 min
• M4 reported crash J6 westboundyesterday 22:00 · cleared after 40 min
• M4 crash Westboundyesterday 18:51 · cleared after 45 min
• M4 crash Westboundyesterday 18:46 · cleared after 1 h 15 min
• M4 crash J4 eastboundyesterday 17:39 · cleared after 1 h 30 min
• M4 crash J13–J14yesterday 16:40 · cleared after 1 h 55 min
• M4 crash Westboundyesterday 16:01 · cleared after 3 h 20 min
• M4 crash Westboundyesterday 13:51 · cleared after 4 h 20 min

Live traffic and past incidents at M4 J4 and M4 J4B.

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