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At a glance

🕐 Last verified 20 Mar, 08:50

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StatusCleared
Severity (NH)Severe
RoadM4
DirectionWestbound
Category (NH)Accident
ReportedFri 20 Mar, 08:17
Cleared08:20
Lasted3 min
Road typeMotorway
Speed limit70 mph (variable)
Weather☁️ Overcast
ReferenceREF-24603372
Views135

Times are UK time.

What National Highways say

M4 westbound between J5 and J6 | Westbound | Accident

Location : The M4 westbound between junctions J5 and J6 . Reason : Road traffic collision. Status : Cleared.

The official National Highways record of this incident, kept here after the road reopens.

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1 update captured · Cleared

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Recent M4 incidents

182 incidents and roadworks logged on the M4 in the last 30 days, 56 of them serious or severe. Times are UK time.

M4 | Berkshire | Carriageway Closure | DelaysWed 9 Sep, 21:42 M4 | Berkshire | Carriageway Closure | Long Delays 30 minutesWed 9 Sep, 21:42 M4 | Greater London | Carriageway ClosureWed 9 Sep, 01:27 M4 | Gloucestershire | Road Closure | Expect DelaysWed 2 Sep, 22:45 M4 | Wiltshire | Carriageway Closure | Expect DelaysSat 15 Aug, 02:59 M4 | Wiltshire | Carriageway Closure | Expect DelaysThu 6 Aug, 09:35
Every M4 incident

Common questions

Is the M4 closed?

Not because of this crash. It cleared at 08:20 UK time on Fri 20 Mar. See the M4 right now.

What happened on the M4 on 20 Mar 2026?

Crash on the M4 westbound J5 to J6, reported at 08:17 UK time on Fri 20 Mar. Cleared at 08:20.

How long did it last?

3 min, from 08:17 UK time on Fri 20 Mar.

Where can I see everything else on the M4?

The M4 live page shows what is happening now, and the M4 archive has every incident on record.

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