M40 Traffic

M40 19:14pm

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Traffic incidents

The following traffic incidents and congestion for M40 have been reported by Highways England, Traffic Scotland, Traffic Wales or Transport for London (TfL) in the last two hours:

CONGESTION
Location: The M40 northbound exit slip at junction J4 (High Wycombe) .
Reason: Congestion.
Status: Currently Active.
Return to normal: Normal traffic conditions are expected between 16:30 and 16:45 on 25 Apr 2025.
Delay: There are currently delays of 10 minutes against expected traffic.
Nearest town: 1.46m from High Wycombe. CLEARED @ 16:30
CONGESTION
Location: The M40 southbound exit slip at junction J4 (High Wycombe) .
Reason: Congestion.
Status: Currently Active.
Return to normal: Normal traffic conditions are expected between 14:45 and 15:00 on 25 Apr 2025.
Nearest town: 1.42m from High Wycombe. CLEARED @ 14:50


There are no current incidents in this location.

M40 Roadworks

The following roadworks have been reported by various highways agencies and official transport sources.Click on a roadworks item to view more details on the traffic map.

ROAD WORKS
Location: The M40 northbound between junctions J1A (Watford)and J2 (Beaconsfield) .
Reason: Emergency roadworks are planned.
Status: Pending.
Schedule: From 09:00 on 30 Apr 2025 to 17:00 on 30 Apr 2025.
Nearest town: 2m from Chalfont Saint Peter.
ROAD WORKS
Location: The M40 northbound between junctions J3 (Loudwater)and J4 (High Wycombe) .
Lane closures: Lanes 2 and 3 will be closed.
Reason: Emergency roadworks are planned.
Status: Pending.
Schedule: From 20:00 on 30 Apr 2025 to 06:00 on 1 May 2025.
Lanes Closed: There will be two of three lanes closed.
Nearest town: 2.38m from Beaconsfield.
ROAD WORKS
Location: The M40 northbound exit slip at junction J4 (High Wycombe) .
Lane closures: Lanes 1 and 2 will be closed.
Reason: Emergency roadworks are planned.
Status: Pending.
Schedule: From 20:00 on 30 Apr 2025 to 06:00 on 1 May 2025.
Lanes Closed: All lanes will be closed.
Nearest town: 1.4m from High Wycombe.
ROAD WORKS
Location: The M40 northbound between junctions J2 (Beaconsfield)and J4 (High Wycombe) .
Lane closures: Lanes 2,3 and 4 will be closed.
Reason: Emergency roadworks are planned.
Status: Pending.
Schedule: From 20:00 on 30 Apr 2025 to 06:00 on 1 May 2025.
Lanes Closed: There will be three of four lanes closed.
Nearest town: 1.17m from Beaconsfield.
ROAD WORKS
Location: The M40 northbound exit slip at junction J3 (Loudwater) .
Lane closures: Lanes 1 and 2 will be closed.
Reason: Emergency roadworks are planned.
Status: Pending.
Schedule: From 20:00 on 30 Apr 2025 to 06:00 on 1 May 2025.
Lanes Closed: All lanes will be closed.
Nearest town: 2.38m from Beaconsfield.

M40

The M40 motorway is a major route between Birmingham and London, connecting the two major cities of the Midlands and the South East. It was built in the 1970s to relieve traffic congestion along the A40, and it has been a major part of the UK motorway network ever since.

In terms of safety, the M40 motorway has seen an overall reduction in the number of accidents in recent years, which is due in part to the installation of average speed cameras along certain stretches of road. The motorway has been the recipient of many safety awards and is regularly cited as one of the safest motorways in the UK. This is evidenced by Department for Transport figures showing that in 2018, there were 7 fatal crashes, 27 serious crashes and 262 slight crashes reported on the entire M40 stretch.

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LEGAL NOTICE

Please remember that it is against the law to use your mobile phone, tablet or any electronic device without a hands-free kit whilst driving.If you're caught by the police using any device that can send or receive data whilst driving or riding a motorcyle you'll get an automatic fixed penalty notice, 6 points on your licence and a fine of £200.A court could also disqualify you from driving.

Elsewhere on the web:

National Highways TrafficNational Highways England

Official source of traffic updates.

Transport for LondonTransport for London (TFL)

Transport for London's (TfL) portal for transportation in London.

Traffic WalesTraffic Wales

The Welsh government's traffic information service for Wales.

Traffic ScotlandTraffic Scotland

Live traffic conditions and news for Scotland's road network.

Advertise on Traffic UpdateYOUR AD HERE

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Location: northbound exit slip at junction J4 (High Wycombe) .

Due to: Congestion.



Normal traffic conditions are expected between 16:30 and 16:45 on 25 April 2025.

Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 1.46m from High Wycombe.

51.61--0.77

Location: southbound exit slip at junction J4 (High Wycombe) .

Due to: Congestion.



Normal traffic conditions are expected between 14:45 and 15:00 on 25 April 2025.
Nearest town: 1.42m from High Wycombe.

51.61--0.77

Location: northbound between junctions J1A (Watford)and J2 (Beaconsfield) .

Due to: Emergency roadworks are planned.

Status : Pending.

Schedule : From 09:00 on 30 April 2025 to 17:00 on 30 April 2025.
Nearest town: 2m from Chalfont Saint Peter.

51.58--0.59

Location: northbound between junctions J3 (Loudwater)and J4 (High Wycombe) .

Lane Closures : Lanes 2 and 3 will be closed.

Due to: Emergency roadworks are planned.

Status : Pending.

Schedule : From 20:00 on 30 April 2025 to 06:00 on 1 May 2025.

Lanes Closed : There will be two of three lanes closed.
Nearest town: 2.38m from Beaconsfield.

51.6--0.69

Location: northbound exit slip at junction J4 (High Wycombe) .

Lane Closures : Lanes 1 and 2 will be closed.

Due to: Emergency roadworks are planned.

Status : Pending.

Schedule : From 20:00 on 30 April 2025 to 06:00 on 1 May 2025.

Lanes Closed : All lanes will be closed.
Nearest town: 1.4m from High Wycombe.

51.61--0.76

Location: northbound between junctions J2 (Beaconsfield)and J4 (High Wycombe) .

Lane Closures : Lanes 2,3 and 4 will be closed.

Due to: Emergency roadworks are planned.

Status : Pending.

Schedule : From 20:00 on 30 April 2025 to 06:00 on 1 May 2025.

Lanes Closed : There will be three of four lanes closed.
Nearest town: 1.17m from Beaconsfield.

51.6--0.66

Location: northbound exit slip at junction J3 (Loudwater) .

Lane Closures : Lanes 1 and 2 will be closed.

Due to: Emergency roadworks are planned.

Status : Pending.

Schedule : From 20:00 on 30 April 2025 to 06:00 on 1 May 2025.

Lanes Closed : All lanes will be closed.
Nearest town: 2.38m from Beaconsfield.

51.6--0.69