M4 crash J16–J17

Crash on the M4 at J16–J17 on Sunday 18 October 2026, from 16:05. Cleared at 16:46 after 41 min. Timeline of reports from TomTom.

Status

Cleared 16:46 on 18 Oct 2026, after 41 min

Location

M4 · J16–J17

Reported as

Collision

At its worst

Stationary traffic · delay ~28 min

Sources

TomTom ×2

Timeline

1. 16:05 TomTom: queueing traffic, “Stationary traffic”, delay ~13 min
2. 16:09 TomTom: now says collision, delay now ~19 min (was ~13), “Stationary traffic, Incident”
3. 16:13 TomTom: delay now ~28 min (was ~19)
4. 16:28 TomTom: queueing traffic, “Stationary traffic”, delay ~16 min
5. 16:36 TomTom: delay now ~10 min (was ~16)
6. 16:46 TomTom no longer reports it
7. 16:46 All clear: no source reports it any more

Source reports

• Stationary traffic, Incident
• Stationary traffic

Other recent incidents on the M4

• M4 stopped traffic J14–J1317:28 · Live
• M4 crash J13–J12 eastbound16:17 · cleared after 1 h 30 min
• M4 reported crash J15–J16 westbound01:38 · cleared after 55 min
• M4 crash J4 eastboundyesterday 23:21 · cleared after 2 h 11 min
• M4 crash J8–J10 westboundyesterday 12:37 · cleared after 51 min
• M4 closed J14–J15 westboundFri 21:09 · cleared after 2 h 5 min
• M4 crash WestboundFri 16:05 · cleared after 35 min
• M4 crash J10–J8 eastboundFri 15:33 · cleared after 2 h 3 min
• M4 stopped traffic J16–J17 westboundFri 14:10 · cleared after 1 h 26 min
• M4 reported crash J4–J4B westboundFri 05:29 · cleared after 1 h 21 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.