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A4
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A4 Westbound Traffic

A4 Great West Road · Westbound carriageway — live updates every 5 minutes, 24/7
A4 WESTBOUND TRAFFIC NOW
A4 WESTBOUND BOX ROUNDABOUT TO…CLOSED 21:00–06:00PLANNED CLOSURE TONIGHT
Planned tonight, 1 of 1
Clear ⏱ Updated 15:15

A4 westbound traffic at 15:15 on Tuesday 3 November: 1 closure tonight.

→ A4 eastbound traffic ⤴ All A4 traffic — both directions
🚨 0 incidents 🚧 0 roadworks · 1 soon
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Regions: London, South East, South West
Home › Traffic › Roads › A4 › Westbound

🚨 A4 Westbound traffic now: live incidents & roadworks

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

🌙 A4 westbound 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 westbound closed? Quick answers

Checked 15:15 on Tuesday 3 November 2026.

Is the A4 westbound closed right now?

No. There is no full closure on the A4 westbound at 15:15.

Is there an incident on the A4 westbound right now?

No. No incidents are reported on the A4 westbound at 15:15.

Is the A4 westbound closed tonight?

Yes. The A4 westbound 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 westbound closed this weekend?

No. No closures are planned on the A4 westbound 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 westbound today?

No. No collision has been reported on the A4 westbound 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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ℹ️ About A4 westbound traffic

This page tracks live A4 traffic westbound only — every incident, closure and roadworks National Highways publish for the westbound 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 A4 eastbound traffic. The full A4 traffic page covers both directions, with the live map, junction-by-junction status, the latest A4 videos and tonight's A4 roadworks.

❓ A4 Westbound Traffic — Frequently Asked Questions

Is the A4 westbound closed today?

No — as of 15:15 National Highways list no full closure on the A4 westbound. Live updates every 5 minutes.

Are there any accidents on the A4 westbound today?

None reported at 15:15 — the live board above updates every 5 minutes, 24 hours a day.

Is there an incident on the A4 westbound right now?

No incidents reported at 15:15 — no police incidents, obstructions, breakdowns or collisions on the A4 westbound. The live board above updates every 5 minutes, 24 hours a day.

Why is the A4 slow westbound today?

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

Are there roadworks on the A4 westbound tonight?

Yes — 1 overnight closure is scheduled on the A4 westbound. Times and junctions are in the closures list above and on the A4 roadworks page.

Where can I check live A4 traffic westbound?

Right here — this page is live A4 traffic for the westbound carriageway, updated every 5 minutes from National Highways, 24 hours a day. The full A4 page covers both directions with the live map and junction-by-junction status.

Which part of the A4 does this page cover?

The whole westbound carriageway, end to end — the A4 runs between London (Hyde Park Corner) and Bristol. The eastbound side has its own page.

🧭 More A4 coverage

A4 traffic — both directions A4 eastbound traffic A4 roadworks tonight

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