About M4 Traffic

M4 Traffic is a free, independent website dedicated to the M4 motorway — bringing together the latest M4 traffic news, reports, roadworks and delays in one clear, easy-to-use place. It’s part of the UK Traffic News network, a family of road-specific sites that help drivers check their route before they set off.

Helping M4 drivers since 2012

We’ve been helping drivers find M4 news and updates since 2012, keeping people moving up and down the motorway. The M4 is one of the UK’s key strategic routes, running around 189 miles from London through Reading, Swindon and Bristol, across the Severn into South Wales to Newport, Cardiff, Swansea and Pont Abraham. With heavy commuter and freight traffic — and the Severn crossing as a pinch point — delays and roadworks are common, so a quick check before you travel pays off.

Also on the M25, M5 or M32?

The M4 connects with the M25 at Junction 4b, the M32 into Bristol at Junction 19, the M5 at Junction 20 and the M48 Severn route at Junctions 21 and 23. If your journey also uses the M25, our sister site M25 Traffic covers it in the same easy format.

Find the latest M4 traffic reports

You can find all the latest M4 traffic reports quickly and easily on our Latest M4 Traffic News page — search by junction number and direction of travel to focus on the stretch you’re driving.