M3 crash J1–J2 westbound

Crash on the M3 westbound at J1–J2 on Thursday 29 October 2026, from 12:24. Cleared at 14:56 after 2 h 32 min. Timeline of reports from the motorway signs.

Status

Cleared 14:56 on 29 Oct 2026, after 2 h 32 min

Location

M3 westbound · J1–J2

Reported as

Collision

Sources

Motorway signs ×5

Timeline

1. Thu 12:24 Motorway signs: “COLLISION SLOW DOWN”
2. Thu 12:45 Motorway signs: “COLLISION M3 WEST”
3. Thu 12:58 Motorway signs: “M3 J2-J3 COLLISION”
4. Thu 13:49 Motorway signs: “REPORT OF OBSTRUCTION”
5. Thu 14:26 Motorway signs no longer show “REPORT OF OBSTRUCTION”
6. Thu 14:56 Motorway signs no longer show “COLLISION SLOW DOWN”
7. Thu 14:56 Motorway signs no longer show “COLLISION M3 WEST”
8. Thu 14:56 Motorway signs no longer show “M3 J2-J3 COLLISION”
9. Thu 14:56 All clear: no source reports it any more

Source reports

• Overhead signs read “COLLISION SLOW DOWN” (1 sign; furthest along: M3 westbound between J1 and J2).
• Signs on the M25 clockwise read “COLLISION M3 WEST” (1 sign; e.g. M25 clockwise between J11 and J12). The marker shows where the signs are, not the M3 itself.
• Signs on the M25 clockwise read “M3 J2-J3 COLLISION” (1 sign; e.g. M25 clockwise between J11 and J12). Marker placed near M3 J2–J3 using the signs there, so it is approximate.
• Signs on the M25 anticlockwise read “M3 J2-J3 COLLISION” (2 signs; e.g. M25 anti-clockwise between J13 and J12). Marker placed near M3 J2–J3 using the signs there, so it is approximate.
• Overhead signs read “REPORT OF OBSTRUCTION” (1 sign; furthest along: M3 westbound between J2 and J3).

Other recent incidents on the M3

• M3 crash J3–J2 eastboundSun 15:48 · cleared after 3 h 28 min
• M3 stopped traffic J2–J3 westboundSat 09:57 · cleared after 46 min
• M3 crash J11–J12 westboundFri 14:22 · cleared after 3 h 49 min
• M3 crash J11–J12Fri 10:23 · cleared after 2 h 41 min
• M3 stopped traffic J11 westboundWed 15:42 · cleared after 3 h 1 min
• M3 crash J3 westbound27 Oct 2026 08:47 · cleared after 11 h 49 min
• M3 crash J3–J2 eastbound26 Oct 2026 19:23 · cleared after 24 h 57 min
• M3 crash J1126 Oct 2026 10:03 · cleared after 2 h 22 min
• M3 reported crash J3 eastbound23 Oct 2026 08:47 · cleared after 46 min
• M3 crash J4–J3 eastbound22 Oct 2026 23:13 · cleared after 1 h 18 min

Live traffic and past incidents at M3 J1 and M3 J2.

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