M4 Junction 46 Traffic

🚨 Live at M4 J46 right now

Checked 14:17 · auto-refresh

✅Nothing reported at M4 J46 right now.

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 46 closed? Quick answers

Checked 14:17 on Tuesday 3 November 2026.

Is M4 junction 46 closed right now?

No. Nothing is closing the road at M4 junction 46 at 14:17.

Is M4 junction 46 closed tonight?

No. No closures are planned at M4 junction 46 tonight (Tue 3 Nov, 18:00 to 06:00).

Tonight: every M4 closure ›

Is M4 junction 46 closed this weekend?

No. No closures are planned at M4 junction 46 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 46 today?

No. No collision has been reported at M4 junction 46 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 J46 is

Location from the National Highways junction reference.

⚠️ Collision record on the M4 at J46

77Collisions

5Fatal

4Serious

106Casualties

Worse than most

Ranked 114 of 556 UK junctions on record · 8 of 49 on the M4

Wider area: counting every road within 3 miles — local streets, A-roads, everything — 1,017 collisions are on record, 20 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 J46. 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 J46 → 8 of 49 junctions on the M4 · see where it ranks nationally

❓ M4 J46 — Frequently Asked Questions

Where is M4 junction 46?

M4 J46 is at Swansea & Llangyfelach. National Highways signs it as Llangyfelach.

Is there an accident at M4 J46?

No — as of 14:17 National Highways list nothing at M4 J46. This page re-checks their live feed every few minutes, 24 hours a day.

Is M4 junction 46 closed?

No closure is listed at M4 J46 as of 14:17.

How many accidents happen at M4 junction 46?

Police STATS19 records show 77 collisions on the M4 within 2 miles of J46, including 5 fatal and 4 serious. Counting every road in the area, 1,017 collisions are recorded within 3 miles. That ranks it 114 of 556 UK junctions we hold collision records for.

🚨 Live M4 traffic

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

🚗 M4 live traffic →

↔️ Next junctions

← J45
Swansea & Morriston J47
Swansea & Penllergaer →

🔢 All M4 junctions

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🆘 Broken down near M4 J46?

Car recovery near this junction - local firms you can call 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.

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