M4 stopped traffic J13–J12 eastbound

Stopped traffic on the M4 eastbound at J13–J12 on Tuesday 20 October 2026, from 12:38. Cleared at 14:26 after 1 h 49 min. Timeline of reports from the motorway signs and TomTom.

Status

Cleared 14:26 on 20 Oct 2026, after 1 h 49 min

Location

M4 eastbound · J13–J12

Reported as

Broken-down vehicle

At its worst

Stationary traffic · delay ~37 min

Sources

Motorway signs · TomTom

Timeline

1. 12:38 Motorway signs: “STRANDED VEHICLE-SLOW”
2. 13:18 TomTom: queueing traffic, “Stationary traffic”, delay ~24 min
3. 13:54 TomTom: delay now ~37 min (was ~27)
4. 14:13 TomTom: delay now ~19 min (was ~28)
5. 14:16 Motorway signs no longer show “STRANDED VEHICLE-SLOW”
6. 14:17 TomTom: delay now ~8 min (was ~19), “Queuing traffic”
7. 14:22 TomTom: “Slow traffic”
8. 14:26 TomTom no longer reports it
9. 14:26 All clear: no source reports it any more

Source reports

• Overhead signs read “STRANDED VEHICLE-SLOW” (2 signs; furthest along: M4 eastbound between J13 and J12).
• Slow traffic

Other recent incidents on the M4

• M4 stopped traffic J13–J1212:04 · cleared after 28 min
• M4 crash J10 westbound11:57 · cleared after 2 h 5 min
• M4 reported crash J13–J12 eastbound11:48 · cleared after 58 min
• M4 reported crash J13–J12 eastbound07:24 · cleared after 51 min
• M4 stopped traffic J20–J2107:14 · cleared after 2 h 19 min
• M4 crash Eastboundyesterday 18:36 · cleared after 6 h 25 min
• M4 stopped traffic J14–J15yesterday 13:41 · cleared after 32 min
• M4 crash J18 eastboundyesterday 06:45 · cleared after 6 h 56 min
• M4 crash J15–J14 eastboundSun 18:24 · cleared after 1 h 36 min
• M4 stopped traffic J13–J14Sun 17:28 · cleared after 1 h 9 min

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