M4 crash J4B–J5 westbound

Crash on the M4 westbound at J4B–J5 on Thursday 29 October 2026, from 07:13. Cleared at 07:54 after 41 min. Timeline of reports from the motorway signs.

Status

Cleared 07:54 on 29 Oct 2026, after 41 min

Location

M4 westbound · J4B–J5

Reported as

Collision

Sources

Motorway signs

Timeline

1. Thu 07:13 Motorway signs: “COLLISION”
2. Thu 07:54 Motorway signs no longer show “COLLISION”
3. Thu 07:54 All clear: no source reports it any more

Source reports

• Overhead signs read “COLLISION” (1 sign; furthest along: M4 westbound between J4B and J5).

Other recent incidents on the M4

• M4 crash J10–J8 eastboundyesterday 16:33 · cleared after 1 h 18 min
• M4 crash Eastboundyesterday 09:44 · cleared after 25 min
• M4 crash Westboundyesterday 08:29 · cleared after 40 min
• M4 crash Prince of Wales Bridge eastboundyesterday 08:13 · cleared after 22 min
• M4 stopped traffic J3–J2yesterday 06:48 · cleared after 2 h 13 min
• M4 crash J10–J11 westboundSun 05:12 · cleared after 1 h
• M4 crash J12–J11 eastboundSun 04:41 · cleared after 1 h 31 min
• M4 reported crash J17–J16 eastboundSat 17:47 · cleared after 37 min
• M4 reported crash J17 westboundSat 17:47 · cleared after 37 min
• M4 stopped traffic J3–J2Sat 09:48 · cleared after 25 min

Live traffic and past incidents at M4 J4B and M4 J5.

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