M4 Traffic

M4 00:14am

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Traffic incidents

The following traffic incidents and congestion for M4 have been reported by Highways England, Traffic Scotland, Traffic Wales or Transport for London (TfL) in the last two hours:

BROKEN DOWN VEHICLE
Location: The M4 westbound entry slip at junction J3 (Heathrow) .
Lane closures: The hard shoulder and lane 1 are closed.
Reason: Broken down vehicle.
Status: Currently Active.
Time to clear: The event is expected to clear between 23:15 and 23:30 on 13 Dec 2025.
Return to normal: Normal traffic conditions are expected between 23:15 and 23:30 on 13 Dec 2025.
Lanes closed: There is one of two lanes closed.
Nearest town: 2.36m from Heathrow. CLEARED @ 22:49
RESURFACING
Location: The M4 eastbound between junctions J20 (Bristol)and J19 (Bristol) .
Lane closures: The hard shoulder is closed.
Reason: Emergency resurfacing.
Status: Currently Active.
Periodfrom 20:10 on 13 Dec 2025 to 06:00 on 15 Dec 2025.
Nearest town: 2.92m from Alveston.
CONGESTION
Location: The M4 eastbound exit slip at junction J4 .
Reason: Congestion.
Status: Currently Active.
Return to normal: Normal traffic conditions are expected between 19:30 and 19:45 on 13 Dec 2025.
Nearest town: 2.04m from Heathrow. CLEARED @ 19:40
CONGESTION
Location: The M4 eastbound between junctions J20 (Bristol)and J19 (Bristol) .
Reason: Congestion.
Status: Currently Active.
Return to normal: Normal traffic conditions are expected between 19:30 and 19:45 on 13 Dec 2025.
Delay: There are currently delays of 10 minutes against expected traffic.
Nearest town: 3.88m from Alveston. CLEARED @ 19:31
CONGESTION
Location: The M4 eastbound between junctions J3 (Heathrow)and J2 (N.Circular) .
Reason: Congestion.
Status: Currently Active.
Return to normal: Normal traffic conditions are expected between 19:15 and 19:30 on 13 Dec 2025.
Delay: There are currently delays of 10 minutes against expected traffic.
Nearest town: 1.83m from Hounslow. CLEARED @ 19:22


There are no current incidents in this location.

M4 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 M4 eastbound entry slip at junction J4B (Heathrow) from the M25 anti-clockwise.
Reason: Roadworks.
Status: Currently Active.
Period: from 21:56 on 13 Dec 2025 to 05:00 on 14 Dec 2025.
Lanes Closed: All lanes are closed.
Nearest town: 2.8m from Heathrow.

M4

The M4 is a motorway in the United Kingdom that connects London and South West England. It runs from London to South Wales and it is a crucial part of the English transport network.

The M4 was first proposed in 1927 and construction began in 1958. It was completed in 1971, running from London to Reading, Berkshire and later extending to South Wales.

The M4 is one of the major roads in the UK and a significant part of the economy. The M4 has been upgraded in certain sections and currently consists of 146 miles (235 km) of motorway.

The M4 is one of the safest motorways in the UK. According to the Department of Transport (DfT), the M4 had a collision rate of just 0.41 per million vehicle kilometres between 2017-2018. This is lower than the UK major-road average of 0.71.

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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.

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Location: westbound entry slip at junction J3 (Heathrow) .

Lane Closures : The hard shoulder and lane 1 are closed.

Due to: Broken down vehicle.



Time To Clear : The event is expected to clear between 23:15 and 23:30 on 13 December 2025.

Normal traffic conditions are expected between 23:15 and 23:30 on 13 December 2025.

Lanes Closed : There is one of two lanes closed.
Nearest town: 2.36m from Heathrow.

51.49--0.41

Location: eastbound between junctions J20 (Bristol)and J19 (Bristol) .

Lane Closures : The hard shoulder is closed.

Due to: Emergency resurfacing.



Period : from 20:10 on 13 December 2025 to 06:00 on 15 December 2025.
Nearest town: 2.92m from Alveston.

51.55--2.55

Location: eastbound exit slip at junction J4 .

Due to: Congestion.



Normal traffic conditions are expected between 19:30 and 19:45 on 13 December 2025.
Nearest town: 2.04m from Heathrow.

51.5--0.45

Location: eastbound between junctions J20 (Bristol)and J19 (Bristol) .

Due to: Congestion.



Normal traffic conditions are expected between 19:30 and 19:45 on 13 December 2025.

Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 3.88m from Alveston.

51.53--2.53

Location: eastbound between junctions J3 (Heathrow)and J2 (N.Circular) .

Due to: Congestion.



Normal traffic conditions are expected between 19:15 and 19:30 on 13 December 2025.

Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 1.83m from Hounslow.

51.49--0.36

Location: eastbound entry slip at junction J4B (Heathrow) from the M25 anti-clockwise.

Due to: Roadworks.



Period : from 21:56 on 13 December 2025 to 05:00 on 14 December 2025.

Lanes Closed : All lanes are closed.
Nearest town: 2.8m from Heathrow.

51.5--0.49