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M3 traffic at 22:38 on Monday 19 October: road closed southbound until 06:00 Tue 20 Oct · 2 live incidents (1 severe/serious).
From National Highways' closure report, in their words. Times can change - check before you set off.
Checked 22:38 on Monday 19 October 2026.
Yes. The M3 is closed now for planned work: southbound Jct 5 to Jct 6 carriageway closure, until 06:00 Tue 20 Oct.
Yes. The M3 has 2 full closures planned tonight (Mon 19 Oct, 18:00 to 06:00): northbound Jct 11 to Jct 8 carriageway closure, 21:00 to 06:00; and southbound Jct 5 to Jct 6 carriageway closure, 21:00 to 06:00. Plus 5 lane or slip road closures.
Tonight: M3 closures and diversions ›No full closures. The M3 stays open this weekend (Fri 23 Oct 18:00 to Mon 26 Oct 06:00). 1 lane or slip road closure is planned: northbound Jct 9 entry slip road closure, since Mon 3 Aug 06:00, until Mon 1 Nov 06:00.
This weekend: M3 closures and diversions ›No. No collision has been reported on the M3 since midnight.
M3 accidents today and yesterday ›Answers use official data only: the National Highways live incident feed and their planned closure report. Times can change, so check before you set off.
Tap a pin for full incident detail. Live positions from National Highways.
🟢 Clear · 🟡 Delays nearby · 🔴 Severe/Crash · Status labels: 💥 CRASH · ❌ CLOSED · 🐌 SLOW · 🚧 WORKS · ⚠️ HAZARD
A red or orange junction border marks a STATS19 collision blackspot. Tap any junction for its own page — live incidents and full collision history. Tap the funnel to filter the list above.
The M3 carries up to 140,751 vehicles a day at its busiest stretch (J13–J14), including 9,901 HGVs — the 11th busiest motorway in Britain. Official Department for Transport counts, 2025.
| Road | Busiest stretch | Vehicles/day | HGVs/day | HGV share |
|---|---|---|---|---|
| M25 | near J14 | 212,636 | 14,853 | 7% |
| M6 | J20–J21 | 187,521 | 23,492 | 12.5% |
| M56 | J3–J4 | 179,634 | 7,547 | 4.2% |
| M1 | near J9 | 162,446 | 19,151 | 11.8% |
| M8 | J16–J17 | 158,065 | 7,214 | 4.6% |
| M4 | near J4 | 156,491 | 6,249 | 4% |
| M3 ◀ | J13–J14 | 140,751 | 9,901 | 7% |
Measured from 146 incidents recorded on the M3 since February 2026: the riskiest window is 11:00–14:00, when 23% of incidents start. Right now (22:00) this is one of its calmest hours.
| Hour | Incidents | Share |
|---|---|---|
| 00:00–01:00 | 1 | 0.7% |
| 01:00–02:00 | 4 | 2.7% |
| 02:00–03:00 | 2 | 1.4% |
| 03:00–04:00 | 2 | 1.4% |
| 04:00–05:00 | 6 | 4.1% |
| 05:00–06:00 | 3 | 2.1% |
| 06:00–07:00 | 6 | 4.1% |
| 07:00–08:00 | 7 | 4.8% |
| 08:00–09:00 | 4 | 2.7% |
| 09:00–10:00 | 8 | 5.5% |
| 10:00–11:00 | 10 | 6.8% |
| 11:00–12:00 ◀ peak | 11 | 7.5% |
| 12:00–13:00 ◀ peak | 7 | 4.8% |
| 13:00–14:00 ◀ peak | 15 | 10.3% |
| 14:00–15:00 | 11 | 7.5% |
| 15:00–16:00 | 7 | 4.8% |
| 16:00–17:00 | 10 | 6.8% |
| 17:00–18:00 | 9 | 6.2% |
| 18:00–19:00 | 8 | 5.5% |
| 19:00–20:00 | 6 | 4.1% |
| 20:00–21:00 | 3 | 2.1% |
| 21:00–22:00 | 4 | 2.7% |
| 22:00–23:00 | 1 | 0.7% |
| 23:00–00:00 | 1 | 0.7% |
The places people drive to most, the M3 junction for each, and live M3 incidents nearby at 22:38.
Boxing Day King George VI Chase; less than a mile from M3 J1
Flat and jumps racing; hosts Royal Ascot and British Champions Day
Theme park on the B3022 Windsor–Ascot road, two miles from Windsor town centre
140-acre zoo with 488,557 visitors in 2025
82,000-capacity rugby stadium; match-day parking must be booked ahead
885,266 passengers in 2025; just off M27 J5 via the A335
Based on DfT STATS19 police collision records. The M3 has 668 recorded collisions at 20 collision hotspots, involving 1,040 casualties (10 fatal). Take extra care here. Ranked by fatal, then serious collisions, then casualties - not by the number of collisions alone.
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Yes — the M3 is closed right now: M3 southbound Jct 5 to Jct 6 carriageway closure, until 06:00 Tue 20 Oct.
The M3 is closed right now: M3 southbound Jct 5 to Jct 6 carriageway closure, until 06:00 Tue 20 Oct. Check the live feed above for every closure on the route.
The M3 is typically busiest during morning rush hour (07:00–09:30) and evening rush hour (16:30–19:00) on weekdays.
There are currently 9 active roadwork schemes on the M3. Check the live feed above for exact locations and durations.
The M3 connects to: M25, A322, M27, A34.
Each side has its own live page: the M3 eastbound and the M3 westbound each list every accident, breakdown, closure and roadworks on that carriageway, updated every 5 minutes, 24 hours a day, from National Highways. The panel at the top of this page shows both sides at a glance.
Official Department for Transport counts (2025) record 140,751 vehicles a day on the M3's busiest stretch (J13–J14), 9,901 of them HGVs. The full breakdown and comparison chart are in the traffic statistics section above.
The M3 has the 11th busiest motorway stretch in Britain at 140,751 vehicles a day (DfT 2025), behind the M25's 212,636 a day at the top.
Measured from 146 incidents recorded on the M3 since February 2026, the riskiest window is 11:00–14:00, when 23% of incidents start. The quietest is 22:00–01:00. Incidents on the M3 typically clear in about 50 minutes.
Daily M3 incidents, posted across all four channels.
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Broken down on the M3? Pick the nearest town and call a local firm direct:
On a motorway? If you can, get onto the hard shoulder or into an emergency area, leave by the left-hand doors and wait behind the barrier. Stuck in a live lane: stay in the car with your seatbelt on and hazard lights on, and call 999.