Closure
M40 Northbound, Jct 2 to Jct 4 carriageway closure
from 22:15
Tonight
🚨 Live M40 Incidents & Roadworks
Auto-refresh 3 minSpotted something on the M40?
Warn other drivers in real time — thousands check these pages every day
💥 Crash⚠️ Hazard⛔ Closure🐌 Queue
🗺️ M40 Traffic Map — Where It's Happening
Tap a pin for full incident detail. Live positions from National Highways.
🔢 M40 Junction Status
Tap a junction for its pageJ1Denham & Uxbridge31 crashes
J6Watlington & Lewknor28 crashes
J8Oxford & Wheatley14 crashes
J10Ardley & Stoke Lyne32 crashes
J12Gaydon & Kineton20 crashes
J14Leamington Spa & Warwick57 crashes
J15Warwick & Longbridge35 crashes
🟢 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.
📊 How busy is the M40?
The M40 carries up to 136,403 vehicles a day at its busiest stretch (J1A–J2), including 8,242 HGVs — the 14th busiest motorway in Britain. Official Department for Transport counts, 2025.
136,403
🚗 vehicles a day · J1A–J2
8,242
🚛 lorries a day
2025
📅 DfT count year
share of traffic on the busiest stretch
Busiest stretch of each motorway — vehicles a day
M25
212,636
M6
187,521
M56
179,634
M1
162,446
M8
158,065
M4
156,491
M40
136,403
View as table
| 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% |
| M40 ◀ | J1A–J2 | 136,403 | 8,242 | 6% |
Source: Department for Transport road traffic statistics, average annual daily flows 2025. Official counts, updated yearly.
📈 M40 Journey Pulse — when incidents actually happen
Measured from 80 incidents recorded on the M40 since February 2026: the riskiest window is 12:00–15:00, when 25% of incidents start. Right now (04:00) you're outside the peak window.
00
04
08
12
16
20
📈 Busiest 12:00–15:00
😌 Quietest 01:00–04:00
🕒 Typically clears in ~69 min ⏱ Typical delay ~10 min 📅 Weekdays see ~1.9× the weekend rate
View as table
| Hour | Incidents | Share |
|---|---|---|
| 00:00–01:00 | 5 | 6.3% |
| 01:00–02:00 | 0 | 0% |
| 02:00–03:00 | 1 | 1.3% |
| 03:00–04:00 | 0 | 0% |
| 04:00–05:00 | 0 | 0% |
| 05:00–06:00 | 1 | 1.3% |
| 06:00–07:00 | 4 | 5% |
| 07:00–08:00 | 6 | 7.5% |
| 08:00–09:00 | 5 | 6.3% |
| 09:00–10:00 | 1 | 1.3% |
| 10:00–11:00 | 6 | 7.5% |
| 11:00–12:00 | 3 | 3.8% |
| 12:00–13:00 ◀ peak | 7 | 8.8% |
| 13:00–14:00 ◀ peak | 7 | 8.8% |
| 14:00–15:00 ◀ peak | 6 | 7.5% |
| 15:00–16:00 | 3 | 3.8% |
| 16:00–17:00 | 5 | 6.3% |
| 17:00–18:00 | 2 | 2.5% |
| 18:00–19:00 | 7 | 8.8% |
| 19:00–20:00 | 1 | 1.3% |
| 20:00–21:00 | 5 | 6.3% |
| 21:00–22:00 | 3 | 3.8% |
| 22:00–23:00 | 1 | 1.3% |
| 23:00–00:00 | 1 | 1.3% |
Measured from 80 incidents recorded by this site since February 2026 (planned roadworks excluded). Recomputed nightly from our incident archive.
🧭 Along the M40
🔀 Major interchanges — where the M40 meets other roads
🛍️J9
Bicester Village
Designer outlet — exit J9 onto the A41
🦅J5–J6
Stokenchurch Gap
47m chalk cutting famous for red kites
🎓J8
Oxford
Spur at J8 continues as the A40 into Oxford
🏰J15
Warwick Castle
Well signposted, under two miles from J15
⚠️ Most Dangerous M40 Junctions
Based on DfT STATS19 police collision records. The M40 has 470 recorded collisions at 23 collision hotspots, involving 729 casualties (23 fatal). Take extra care here.
#1
Severe Blackspot
J14
57 collisions · 85 casualties · 5 fatal · 13 serious
#2
Severe Blackspot
J1
31 collisions · 52 casualties · 3 fatal · 10 serious
#3
Severe Blackspot
J15
35 collisions · 58 casualties · 2 fatal · 5 serious
#4
Severe Blackspot
nr Warwick
20 collisions · 28 casualties · 2 fatal · 1 serious
#5
Blackspot
nr Thame
12 collisions · 20 casualties · 2 fatal · 1 serious
#6
Severe Blackspot
nr Bicester
42 collisions · 64 casualties · 1 fatal · 10 serious
🛒 Journey Essentials
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❓ M40 Traffic — Frequently Asked Questions
Q: Is the M40 closed today?
Any M40 closure appears in the live feed above within minutes of National Highways reporting it, including tonight's overnight roadworks closures.
Q: Is there traffic on the M40 today?
The live feed above shows every incident, delay, roadwork and overnight closure on the M40, updated every 5 minutes from National Highways.
Q: What is the worst time to use the M40?
The M40 is typically busiest during morning rush hour (07:00–09:30) and evening rush hour (16:30–19:30) on weekdays.
Q: Are there roadworks on the M40 right now?
Roadworks and overnight closures on the M40 are listed above and at /traffic/m40/roadworks/, taken from the National Highways daily closure report.
Q: What roads connect to the M40?
The M40 connects to: M25, A40, M42.
Q: How many vehicles use the M40 every day?
Official Department for Transport counts (2025) record 136,403 vehicles a day on the M40's busiest stretch (J1A–J2), 8,242 of them HGVs. The full breakdown and comparison chart are in the traffic statistics section above.
Q: How busy is the M40 compared with other motorways?
The M40 has the 14th busiest motorway stretch in Britain at 136,403 vehicles a day (DfT 2025), behind the M25's 212,636 a day at the top.
Q: What time of day is the M40 worst for incidents?
Measured from 80 incidents recorded on the M40 since February 2026, the riskiest window is 12:00–15:00, when 25% of incidents start. The quietest is 01:00–04:00. Incidents on the M40 typically clear in about 69 minutes.
📊 M40 Status Summary
0
Active incidents
0
Severe/serious
0
Roadworks
04:01
Last updated
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ℹ️ M40 Road Details
- Length
- 87 miles
- Junctions
- 16
- From
- London (M25 J16)
- To
- Birmingham (M42)
- Type
- Motorway
- AM Rush
- 07:00–09:30
- PM Rush
- 16:30–19:30
📍 Key M40 Locations
High Wycombe
Oxford
Banbury
Warwick
Coventry
Birmingham
🔗 Roads Connecting to the M40
🛣️ M40 Services & Motorway Stops
🔗 Related Tools
📱 Follow M40 Updates
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