M4 Junction 12 Traffic

🚨 Live at M4 J12 right now

Checked 14:18 · auto-refresh

✅Nothing reported at M4 J12 right now.

Planned closures at M4 J12

🌙 Planned from 21:00 until 06:00 Wed 4 Nov

M4 westbound Jct 12 exit slip road closure

← WestboundPart closure

🌙 Planned from 21:00 until 06:00 Wed 4 Nov

M4 westbound Jct 12 entry slip road closure

← WestboundPart closure

Straight from National Highways, re-checked every 3 minutes while this page is open.

All live M4 traffic →M4 eastbound →M4 westbound →M4 roadworks →

Is M4 junction 12 closed? Quick answers

Checked 14:18 on Tuesday 3 November 2026.

Is M4 junction 12 closed right now?

No. Nothing is closing the road at M4 junction 12 at 14:18.

Is M4 junction 12 closed tonight?

No full closures. M4 junction 12 stays open tonight (Tue 3 Nov, 18:00 to 06:00). 2 lane or slip road closures are planned: westbound Jct 12 exit slip road closure, 21:00 to 06:00; and westbound Jct 12 entry slip road closure, 21:00 to 06:00.

Tonight: every M4 closure ›

Is M4 junction 12 closed this weekend?

No. No closures are planned at M4 junction 12 this weekend (Fri 6 Nov 18:00 to Mon 9 Nov 06:00).

This weekend: every M4 closure ›

Is there an accident at M4 junction 12 today?

No. No collision has been reported at M4 junction 12 since midnight.

M4 accidents today and yesterday ›

Answers use official data only: the National Highways live incident feed and their planned closure report. A closure is counted here when National Highways name this junction or a stretch that runs through it.

🗺️ Where M4 J12 is

Location from the National Highways junction reference. Nearest towns: Theale, Pangbourne, Reading, Woodley.

📍 Heading to… from M4 J12

Also near this junction

Select Car Leasing Stadium Stadium · Reading, Berkshire 3.5 miles east in a straight line 🧭 Directions Berkshire traffic

The Oracle Shopping · Reading, Berkshire 4.5 miles east in a straight line 🧭 Directions Berkshire traffic

Newbury Racecourse Racecourse · Newbury, Berkshire 10 miles west in a straight line 🧭 Directions Berkshire traffic

Didcot Railway Centre Attraction · Didcot, Oxfordshire 15 miles north-west in a straight line 🧭 Directions Oxfordshire traffic

Places and the junctions they are reached from are kept by our team; distances are measured in a straight line from the junction, not along the road.

⚠️ Collision record on the M4 at J12

54Collisions

0Fatal

13Serious

98Casualties

Better than most

Ranked 398 of 556 UK junctions on record · 33 of 49 on the M4

Wider area: counting every road within 3 miles — local streets, A-roads, everything — 682 collisions are on record, 17 of them fatal. That figure follows how built-up the area is, so it is shown for context and is not what the ranking uses.

Department for Transport STATS19 police collision records on the M4 itself, within 2 miles of J12. This is the free summary — the full breakdown by severity, weather, road surface, time of day and individual record is in the blackspot report.

📊 Full collision analysis for M4 J12 → 33 of 49 junctions on the M4 · see where it ranks nationally

❓ M4 J12 — Frequently Asked Questions

Where is M4 junction 12?

M4 J12 is at Theale & Reading. National Highways signs it as Theale. The nearest town is Theale.

Is there an accident at M4 J12?

No — as of 14:18 National Highways list nothing at M4 J12. This page re-checks their live feed every few minutes, 24 hours a day.

Is M4 junction 12 closed?

Not right now. Planned: M4 westbound Jct 12 exit slip road closure, from 21:00 until 06:00 Wed 4 Nov.

How many accidents happen at M4 junction 12?

Police STATS19 records show 54 collisions on the M4 within 2 miles of J12, including 0 fatal and 13 serious. Counting every road in the area, 682 collisions are recorded within 3 miles. That ranks it 398 of 556 UK junctions we hold collision records for.

What is near M4 junction 12?

Within 15 miles of M4 J12: Select Car Leasing Stadium (stadium, Reading), about 3.5 miles east in a straight line; The Oracle (shopping, Reading), about 4.5 miles east in a straight line; Newbury Racecourse (racecourse, Newbury), about 10 miles west in a straight line; Didcot Railway Centre (attraction, Didcot), about 15 miles north-west in a straight line.

🚨 Live M4 traffic

Live incidents, roadworks and delays for the whole M4, updated every 5 minutes from National Highways.

🚗 M4 live traffic →

↔️ Next junctions

← J11
Reading & Shinfield J13
Newbury & Chieveley →

📍 Towns near this junction

Theale 0.4 mi Pangbourne 4.1 mi Reading 4.7 mi Woodley 7.8 mi

🔢 All M4 junctions

J1 J2 J3 J4 J4A J4B J5 J6 J7 J8 J10 J11 J12 J13 J14 J15 J16 J17 J18 J19 J20 J21 J22 J23 J23A J24 J25 J25A J26 J27 J28 J29 J30 J32 J33 J34 J35 J36 J37 J38 J39 J40 J41 J42 J43 J44 J45 J46 J47 J48 J49

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