M4 stopped traffic J16–J17 westbound

Stopped traffic on the M4 westbound at J16–J17 on Friday 16 October 2026, from 14:10. Cleared at 15:36 after 1 h 26 min. Timeline of reports from the motorway signs and TomTom.

Status

Cleared 15:36 on 16 Oct 2026, after 1 h 26 min

Location

M4 westbound · J16–J17

Reported as

Obstruction or hazard

At its worst

Stationary traffic · delay ~30 min

Sources

Motorway signs · TomTom ×2

Timeline

1. 14:10 Motorway signs: “VEHICLE FIRE SLOW DOWN”
2. 14:27 TomTom: queueing traffic, “Stationary traffic”, delay ~13 min
3. 14:35 TomTom: delay now ~21 min (was ~15)
4. 15:07 TomTom: now says obstruction or hazard, “traffic, Vehicle fire”
5. 15:12 TomTom: now says queueing traffic, “Stationary traffic”
6. 15:21 TomTom: queueing traffic, “Stationary traffic”, delay ~16 min
7. 15:23 Motorway signs no longer show “VEHICLE FIRE SLOW DOWN”
8. 15:36 TomTom no longer reports it
9. 15:36 All clear: no source reports it any more

Source reports

• Overhead signs read “VEHICLE FIRE SLOW DOWN” (3 signs; furthest along: M4 westbound between J16 and J17).
• Stationary traffic

Other recent incidents on the M4

• M4 reported crash J4–J4B westbound05:29 · cleared after 1 h 21 min
• M4 crash J10–J8 eastboundyesterday 22:50 · cleared after 57 min
• M4 reported crash J17–J16 eastboundyesterday 12:41 · cleared after 1 h 4 min
• M4 crash J4 eastboundyesterday 07:16 · cleared after 57 min
• M4 reported crash J3 westboundyesterday 06:02 · cleared after 1 h 40 min
• M4 reported crash J6–J5 eastboundyesterday 05:34 · cleared after 38 min
• M4 reported crash J5–J6 westboundyesterday 05:34 · cleared after 38 min
• M4 stopped traffic J4–J4B westboundWed 06:51 · cleared after 2 h 54 min
• M4 closed WestboundWed 01:44 · cleared after 2 h 15 min
• M4 crash J17–J18Tue 10:09 · cleared after 2 h 50 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.