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A12
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A12 Southbound Traffic

A12 Trunk Road · Southbound (London-bound) carriageway — live updates every 5 minutes, 24/7
A12 SOUTHBOUND TRAFFIC NOW
A12 SOUTHBOUNDNO REPORTED INCIDENTSCHECKED EVERY 5 MIN · 24/7
National Highways data, UK TIME
Clear ⏱ Updated 14:18

A12 southbound traffic at 14:18 on Tuesday 3 November: no major incidents reported — live National Highways updates every 5 minutes, 24/7.

↑ A12 northbound traffic(Colchester-bound) ⤴ All A12 traffic — both directions
🚨 0 incidents 🚧 0 roadworks · 12 soon
🔍
120 miles long
Regions: London, East of England
Home › Traffic › Roads › A12 › Southbound

🚨 A12 Southbound traffic now: live incidents & roadworks

Updates every 5 min
Share A12 status: 💬 📘 X
No live incidents on the A12 right now — checking National Highways every 5 minutes, 24/7. Closures are listed below.

🌙 A12 southbound closures tonight and the next 3 days 12

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

  • Full closure
    Southbound A12 southbound Jct 25 to 19 carriageway closure
    Tomorrow night · 21:00–05:00
  • Full closure
    Southbound A12 southbound Jct 21 to 19 carriageway closure
    Thu 5 Nov · 21:00–05:00
  • Partial closure
    Southbound A12 southbound Jct 18 exit slip road closure
    Tonight · 21:00–23:00
    Diversion: diversion routes for horticulture (cutting and planting) on behalf of National Highways
  • Partial closure
    Southbound A12 southbound Jct 18 entry slip road closure
    Tonight · 23:00–02:00
    Diversion: diversion routes for horticulture (cutting and planting) on behalf of National Highways
  • Partial closure
    Southbound A12 southbound Jct 17 entry slip road closure
    Tomorrow · 02:00–05:00
    Diversion: diversion routes for horticulture (cutting and planting) on behalf of National Highways
  • Partial closure
    Southbound A12 southbound Jct 16 exit slip road closure
    Tomorrow night · 21:00–23:00
    Diversion: diversion routes for horticulture (cutting and planting) on behalf of National Highways
Show all 12 closures
  • Partial closure
    Southbound A12 southbound Jct 16 entry slip road closure
    Tomorrow night · 23:00–02:00
    Diversion: diversion routes for horticulture (cutting and planting) on behalf of National Highways
  • Partial closure
    Southbound A12 southbound Jct 15 exit slip road closure
    Thu 5 Nov · 02:00–05:00
    Diversion: diversion routes for horticulture (cutting and planting) on behalf of National Highways
  • Partial closure
    Southbound A12 southbound Jct 14 entry slip road closure
    Thu 5 Nov · 21:00–23:00
    Diversion: diversion routes for horticulture (cutting and planting) on behalf of National Highways
  • Partial closure
    Southbound A12 Southbound Jct 25 carriageway cloure
    Thu 5 Nov · 21:00–05:00
  • Partial closure
    Southbound A12 southbound Jct 13 exit slip road closure
    Thu 5 Nov · 23:00–02:00
    Diversion: diversion routes for horticulture (cutting and planting) on behalf of National Highways
  • Partial closure
    Southbound A12 southbound Jct 13 entry slip road closure
    Fri 6 Nov · 02:00–05:00
    Diversion: diversion routes for horticulture (cutting and planting) on behalf of National Highways
All A12 roadworks & diversions →

Is the A12 southbound closed? Quick answers

Checked 14:18 on Tuesday 3 November 2026.

Is the A12 southbound closed right now?

No. There is no full closure on the A12 southbound at 14:18.

Is there an incident on the A12 southbound right now?

No. No incidents are reported on the A12 southbound at 14:18.

Is the A12 southbound closed tonight?

No full closures. The A12 southbound stays open tonight (Tue 3 Nov, 18:00 to 06:00). 3 lane or slip road closures are planned: southbound Jct 18 exit slip road closure, 21:00 to 23:00; and southbound Jct 18 entry slip road closure, 23:00 to 02:00 and 1 more.

Tonight: A12 closures and diversions ›

Is the A12 southbound closed this weekend?

Yes. The A12 southbound has 1 full closure planned this weekend (Fri 6 Nov 18:00 to Mon 9 Nov 06:00): southbound Jct 21 to 19 carriageway closure, Fri 21:00 to 05:00. Plus 1 lane or slip road closure.

This weekend: A12 closures and diversions ›

Is there an accident on the A12 southbound today?

No. No collision has been reported on the A12 southbound since midnight.

A12 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 A12 southbound traffic

This page tracks live A12 traffic southbound only — every incident, closure and roadworks National Highways publish for the southbound 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 A12 northbound traffic. The full A12 traffic page covers both directions, with the live map, junction-by-junction status, the latest A12 videos and tonight's A12 roadworks.

❓ A12 Southbound Traffic — Frequently Asked Questions

Is the A12 southbound closed today?

No — as of 14:18 National Highways list no full closure on the A12 southbound. Live updates every 5 minutes.

Are there any accidents on the A12 southbound today?

None reported at 14:18 — the live board above updates every 5 minutes, 24 hours a day.

Is there an incident on the A12 southbound right now?

No incidents reported at 14:18 — no police incidents, obstructions, breakdowns or collisions on the A12 southbound. The live board above updates every 5 minutes, 24 hours a day.

Why is the A12 slow southbound today?

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

Are there roadworks on the A12 southbound tonight?

Yes — 2 overnight closures are scheduled on the A12 southbound. Times and junctions are in the closures list above and on the A12 roadworks page.

Where can I check live A12 traffic southbound?

Right here — this page is live A12 traffic for the southbound carriageway, updated every 5 minutes from National Highways, 24 hours a day. The full A12 page covers both directions with the live map and junction-by-junction status.

Which part of the A12 does this page cover?

The whole southbound carriageway, end to end — the A12 runs between London (Aldgate) and Great Yarmouth. The northbound side has its own page.

🧭 More A12 coverage

A12 traffic — both directions A12 northbound traffic A12 roadworks tonight

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