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At a glance

🕐 Last verified 20 Mar, 11:00

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StatusCleared
Severity (NH)Severe
RoadM40
DirectionSouthbound
Category (NH)Overturned Vehicle
ReportedFri 20 Mar, 10:29
Cleared10:35
Lasted6 min
Road typeMotorway
Speed limit70 mph (variable)
Weather☁️ Overcast
ReferenceREF-24719339
Views148

Times are UK time.

What National Highways say

M40 J3 southbound access | Southbound | Overturned Vehicle

Location : The M40 southbound entry slip at junction J3 . Reason : Accident involving an overturned vehicle. Status : Currently Active. Time To Clear : The event is expected to clear between 12:00 and 12:15 on 20 March 2026. Return To Normal : Normal traffic conditions are expected between 12:00 and 12:15 on 20 March 2026. Lanes Closed : All lanes are closed.

The official National Highways record of this incident, kept here after the road reopens.

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Live Incident Timeline

1 update captured · 2 affected segments · Cleared

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Recent M40 incidents

6 incidents and roadworks logged on the M40 in the last 30 days, 4 of them serious or severe. Times are UK time.

M40 | Oxfordshire | Carriageway Closure | Severe Delays 2 hoursFri 7 Aug, 12:49 M40 | Buckinghamshire | Carriageway Closure | Expect DelaysFri 10 Jul, 02:14 M40 | Oxfordshire | Carriageway Closure | DelaysSat 4 Jul, 11:00 M40 J4 northbound exit | Northbound | CongestionMon 29 Jun, 17:06 M40 J4 northbound exit | Northbound | CongestionMon 29 Jun, 11:30 M40 southbound between J5 and J4 | Southbound | AccidentSun 28 Jun, 18:19
Every M40 incident

Common questions

Is the M40 closed?

Not because of this overturned vehicle. It cleared at 10:35 UK time on Fri 20 Mar. See the M40 right now.

What happened on the M40 on 20 Mar 2026?

Overturned vehicle on the M40 southbound at J3, reported at 10:29 UK time on Fri 20 Mar. Cleared at 10:35.

How long did it last?

6 min, from 10:29 UK time on Fri 20 Mar.

Where can I see everything else on the M40?

The M40 live page shows what is happening now, and the M40 archive has every incident on record.

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