M4 crash J13–J12 eastbound

Crash on the M4 eastbound at J13–J12 on Wednesday 4 November 2026, from 08:39. Cleared at 09:31 after 52 min. Timeline of reports from the motorway signs and TomTom.

Status

Cleared 09:31 on 4 Nov 2026, after 52 min

Location

M4 eastbound · J13–J12

Reported as

Collision

At its worst

Stationary traffic

Sources

Motorway signs · TomTom

Timeline

1. 08:39 Motorway signs: “OBSTRUCTION ON SLIP ROAD”
2. 09:05 TomTom: collision, “Stationary traffic, Incident”, delay ~28 min
3. 09:09 TomTom no longer reports it
4. 09:31 Motorway signs no longer show “OBSTRUCTION ON SLIP ROAD”
5. 09:31 All clear: no source reports it any more

Source reports

• Overhead signs read “OBSTRUCTION ON SLIP ROAD” (1 sign; furthest along: M4 eastbound between J13 and J12).
• Stationary traffic, Incident

Other recent incidents on the M4

• M4 crash Westbound07:50 · cleared after 1 h 15 min
• M4 stopped traffic J3–J206:48 · cleared after 2 h 36 min
• M4 crash J3 westboundyesterday 18:44 · cleared after 51 min
• M4 crash J20–J19 eastboundyesterday 11:21 · cleared after 34 min
• M4 stopped traffic J3–J2yesterday 06:50 · cleared after 2 h 13 min
• M4 crash J4B–J5 westboundyesterday 01:23 · cleared after 17 h 34 min
• M4 crash J10–J8 eastboundMon 16:33 · cleared after 1 h 18 min
• M4 crash EastboundMon 09:44 · cleared after 25 min
• M4 crash WestboundMon 08:29 · cleared after 40 min
• M4 crash Prince of Wales Bridge eastboundMon 08:13 · cleared after 22 min

Live traffic and past incidents at M4 J13 and M4 J12.

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