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A4
🟢 A-road

A4 Traffic News

A4 Great West Road · London (Hyde Park Corner) → Bristol
A4 TRAFFIC NOW
A4 WESTBOUND BOX ROUNDABOUT TO…CLOSED 21:00–06:00PLANNED CLOSURE TONIGHT
Planned tonight, 1 of 1
Clear ⏱ Updated 14:03

A4 traffic at 14:03 on Tuesday 3 November: 1 closure tonight.

🚨 0 incidents 🚧 0 roadworks · 1 soon
Regions: London, South East, South West
Home › Traffic › Roads › A4

🚨 A4 traffic now: live incidents & roadworks

Updates every 5 min
Share A4 status: 💬 📘 X
No live incidents on the A4 right now — checking National Highways every 5 minutes, 24/7. Closures are listed below.

🌙 A4 closures tonight and the next 3 days 1

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

  • Full closure
    Westbound A4 westbound Box roundabout to London Road roundabout - carriageway closure
    Tonight · 21:00–06:00
    Diversion: Diversion for light vehicles via London Road E, High Street, London Road W, A46. Diversion for HGV's via A4 eastbound, A350 northbound, A420, A46.
All A4 roadworks & diversions →

Is the A4 closed? Quick answers

Checked 14:03 on Tuesday 3 November 2026.

Is the A4 closed right now?

No. There is no full closure on the A4 at 14:03.

Is there an incident on the A4 right now?

No. No incidents are reported on the A4 at 14:03.

Is the A4 closed tonight?

Yes. The A4 has 1 full closure planned tonight (Tue 3 Nov, 18:00 to 06:00): westbound Box roundabout to London Road roundabout - carriageway closure, 21:00 to 06:00. Diversion: Diversion for light vehicles via London Road E, High Street, London Road W, A46. Diversion for HGV's via A4 eastbound, A350 northbound, A420, A46.

Tonight: A4 closures and diversions ›

Is the A4 closed this weekend?

No. No closures are planned on the A4 this weekend (Fri 6 Nov 18:00 to Mon 9 Nov 06:00).

This weekend: A4 closures and diversions ›

Is there an accident on the A4 today?

No. No collision has been reported on the A4 since midnight.

A4 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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🗺️ A4 Traffic Map — Where It's Happening

Tap a pin for full incident detail. Live positions from National Highways.

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📍 Heading to… off the A4

The places people drive to most, the A4 junction for each, and live A4 incidents nearby at 14:03.

Airport

Heathrow Airport

Heathrow, Greater London
🛣️ Via the A4
✅ No A4 incidents reported within 3 miles

83.9 million passengers in 2024; £7 charge to use terminal drop-off areas

Racecourse

Newbury Racecourse

Newbury, Berkshire
🛣️ Via the A4
✅ No A4 incidents reported within 3 miles

M4/A4 traffic enters via Hambridge Road; A339 traffic via Racecourse Road

⚠️ Most Dangerous A4 Junctions

Based on DfT STATS19 police collision records. The A4 has 5,551 recorded collisions at 17 collision hotspots, involving 6,760 casualties (68 fatal). Take extra care here. Ranked by fatal, then serious collisions, then casualties - not by the number of collisions alone.

#1
nr M4
1,969 collisions · 2,309 casualties · 17 fatal · 311 serious
Severe Blackspot
#2
nr M25
666 collisions · 836 casualties · 10 fatal · 87 serious
Severe Blackspot
#3
nr Slough
528 collisions · 666 casualties · 7 fatal · 73 serious
Severe Blackspot
#4
nr Marlborough
82 collisions · 111 casualties · 6 fatal · 16 serious
Severe Blackspot
#5
nr Keynsham
487 collisions · 591 casualties · 5 fatal · 70 serious
Severe Blackspot
#6
nr Chippenham
191 collisions · 274 casualties · 5 fatal · 28 serious
Severe Blackspot
🔍 See the full A4 collision blackspot map →

🛒 Journey Essentials

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📰 A4 traffic news, updates and closures

This is the A4 traffic news page from UK Traffic Updates: A4 traffic now, for the whole road from London (Hyde Park Corner) to Bristol. Every crash, breakdown, lane closure, delay and roadworks National Highways report for the A4 is listed at the top, checked every 5 minutes, 24 hours a day, with the worst on the sign and where it is: the nearest towns and the county.

National Highways has closed its Traffic England website, so the live A4 information people used to check there is here in one place: today's A4 incidents, A4 closures tonight from their daily closure report, A4 roadworks, A4 accidents today, the junction-by-junction status and a live map. Drivers can report what they see as it happens.

Want A4 traffic updates sent to you? Pick the free daily road summary or Early Warning alerts for the roads you drive. For every other motorway and A-road, see live UK traffic now.

❓ A4 Traffic — Frequently Asked Questions

Is the A4 closed today?

Any A4 closure appears in the live feed above within minutes of National Highways reporting it, including tonight's overnight roadworks closures.

Is there traffic on the A4 today?

The live feed above shows every incident, delay, roadwork and overnight closure on the A4, updated every 5 minutes, 24 hours a day, from National Highways.

Is there an incident on the A4 right now?

Every live incident on the A4 — police incidents, obstructions, breakdowns, debris, collisions and closures — appears in the live feed above within minutes of National Highways reporting it, updated every 5 minutes, 24 hours a day.

What is the worst time to use the A4?

The A4 is typically busiest during morning rush hour (07:00–09:30) and evening rush hour (16:00–19:30) on weekdays.

Are there roadworks on the A4 right now?

Roadworks and overnight closures on the A4 are listed above and at /traffic/a4/roadworks/, taken from the National Highways daily closure report.

What roads connect to the A4?

The A4 connects to: M4, M25, A406, A312, A329.

Where can I get A4 traffic news and updates?

Right here. This A4 traffic news page shows A4 traffic now: every live incident, delay, closure and roadworks National Highways report, updated every 5 minutes, 24 hours a day, with tonight's planned closures, junction-by-junction status and a live map. For A4 traffic updates sent to you, sign up on this page for the free daily road summary or Early Warning alerts for the roads you drive.

Is there an accident on the A4 eastbound or westbound today?

Each side has its own live page: the A4 eastbound and the A4 westbound each list every accident, breakdown, closure and roadworks on that carriageway, updated every 5 minutes, 24 hours a day, from National Highways. The panel at the top of this page shows both sides at a glance.

📊 A4 Status Summary

0
Active incidents
0
Severe/serious
0
Roadworks
14:03
Last updated
🆘 Broken down on the A4?
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ℹ️ A4 Road Details

From
London (Hyde Park Corner)
To
Bristol
Type
A-road
AM Rush
07:00–09:30
PM Rush
16:00–19:30

📍 Key A4 Locations

London Hammersmith Chiswick Brentford Hounslow Heathrow Slough Maidenhead Reading Bath Bristol

🛣️ A4 Services & Motorway Stops

No services directly on the A4. Browse all services →

Junction

DfT STATS19 police collision records

0
Collisions
0
Fatal
0
Serious
0
Slight
🔍 Full blackspot map →
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Know before you go on A4

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🚛 Car recovery along the A4

Broken down on the A4? Pick the nearest town and call a local firm direct:

On a motorway? If you can, get onto the hard shoulder or into an emergency area, leave by the left-hand doors and wait behind the barrier. Stuck in a live lane: stay in the car with your seatbelt on and hazard lights on, and call 999.