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M40
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M40 Southbound Traffic

M40 Motorway · Southbound carriageway — live updates every 5 minutes, 24/7
M40 SOUTHBOUND TRAFFIC NOW
M40 SOUTHBOUND J9 ENTRY SLIP ROADCLOSED 22:15–06:00PLANNED CLOSURE TONIGHT
Planned tonight, 1 of 2
Clear ⏱ Updated 14:00

M40 southbound traffic at 14:00 on Tuesday 3 November: 2 closures tonight.

↑ M40 northbound traffictowards Birmingham ⤴ All M40 traffic — both directions
🚨 0 incidents 🚧 0 roadworks · 3 soon
🔍
87 miles long
Junctions J1–J16
Regions: London, South East, West Midlands
Home › Traffic › Roads › M40 › Southbound

🚨 M40 Southbound traffic now: live incidents & roadworks

Updates every 5 min
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No live incidents on the M40 right now — checking National Highways every 5 minutes, 24/7. Closures are listed below.

🌙 M40 southbound closures tonight and the next 3 days 3

From National Highways' closure report, in their words. Times can change - check before you set off.

  • Full closure
    Southbound M40 Southbound Jct 9 entry slip road carriageway closure
    Tonight · 22:15–06:00
    Diversion: diversion route for maintenance works. Diversion via National Highways network.
  • Full closure
    Southbound M40 Southbound, Jct 4 to Jct 3 carriageway closure
    Tonight · 22:15–06:00
    Diversion: diversion route for maintenance work Diversion via National Highways network and local authority road
  • Partial closure
    Southbound M40 Southbound Jct 4 entry slip road closure
    Tonight · 22:15–06:00
    Diversion: diversion route for maintenance work Diversion via National Highways network and local authority road
All M40 roadworks & diversions →

Is the M40 southbound closed? Quick answers

Checked 14:00 on Tuesday 3 November 2026.

Is the M40 southbound closed right now?

No. There is no full closure on the M40 southbound at 14:00.

Is there an incident on the M40 southbound right now?

No. No incidents are reported on the M40 southbound at 14:00.

Is the M40 southbound closed tonight?

Yes. The M40 southbound has 2 full closures planned tonight (Tue 3 Nov, 18:00 to 06:00): Southbound Jct 9 entry slip road carriageway closure, 22:15 to 06:00; and Southbound, Jct 4 to Jct 3 carriageway closure, 22:15 to 06:00. Plus 1 lane or slip road closure. Diversion: diversion route for maintenance works. Diversion via National Highways network.

Tonight: M40 closures and diversions ›

Is the M40 southbound closed this weekend?

Yes. The M40 southbound has 1 full closure planned this weekend (Fri 6 Nov 18:00 to Mon 9 Nov 06:00): Southbound Jct 9 entry slip road carriageway closure, Fri 22:15 to 06:00. Diversion: diversion route for maintenance works. Diversion via National Highways network.

This weekend: M40 closures and diversions ›

Is there an accident on the M40 southbound today?

No. No collision has been reported on the M40 southbound since midnight.

M40 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.

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ℹ️ About M40 southbound traffic

This page tracks live M40 traffic southbound only — every incident, closure and roadworks National Highways publish for the southbound carriageway, updated every 5 minutes, 24 hours a day. Anything they list without naming a direction is shown here too, so nothing is missed.

Heading the other way? See M40 northbound traffic. The full M40 traffic page covers both directions, with the live map, junction-by-junction status, the latest M40 videos and tonight's M40 roadworks.

❓ M40 Southbound Traffic — Frequently Asked Questions

Is the M40 southbound closed today?

No — as of 14:00 National Highways list no full closure on the M40 southbound. Live updates every 5 minutes.

Are there any accidents on the M40 southbound today?

None reported at 14:00 — the live board above updates every 5 minutes, 24 hours a day.

Is there an incident on the M40 southbound right now?

No incidents reported at 14:00 — no police incidents, obstructions, breakdowns or collisions on the M40 southbound. The live board above updates every 5 minutes, 24 hours a day.

Why is the M40 slow southbound today?

Nothing is listed right now — when the board above is clear, slow southbound traffic is usually rush-hour volume (07:00–09:00 and 16:30–18:30 on weekdays).

Are there roadworks on the M40 southbound tonight?

Yes — 2 overnight closures are scheduled on the M40 southbound. Times and junctions are in the closures list above and on the M40 roadworks page.

Where can I check live M40 traffic southbound?

Right here — this page is live M40 traffic for the southbound carriageway, updated every 5 minutes from National Highways, 24 hours a day. The full M40 page covers both directions with the live map and junction-by-junction status.

Which part of the M40 does this page cover?

The whole southbound carriageway, end to end — the M40 runs between London (M25 J16) and Birmingham (M42). The northbound side has its own page.

🧭 More M40 coverage

M40 traffic — both directions M40 northbound traffic M40 roadworks tonight

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