The M4, originally the London-South Wales Motorway, is a motorway in the United Kingdom running from west London to southwest Wales. The English section to the Severn Bridge was constructed between 1961 and 1971; the Welsh element was largely complete by 1980, though a non-motorway section around Briton Ferry bridge remained until 1993.

M4高速公路 （M4 motorway），是 英國 的一條 高速公路，連結 倫敦 與 威爾斯 南部。 它是 歐洲E30公路 的一部分，經過的主要城鎮有 雷丁 、 史雲登 、 布里斯托 、 紐波特 、 卡地夫 及 斯溫西。

See all the latest M4 traffic news and M4 traffic reports. Location : The M4 eastbound exit slip at junction J15 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 08:15 and 08:30 on 18 March 2025. Delay : There are currently delays of 10 minutes against expected traffic.

Traffic delays for the M4 motorway in Southern England. Latest travel news from UK Traffic Delays official open source data. Location : The M4 westbound at junction J6 . Lane Closures : …

2025年3月15日 · We feature M4 traffic news relevant to today, current M4 traffic reports and updates. Information about M4 roadworks. Information about the latest congestion on the M4 that could delay your journey down the M4 motorway. M4 accidents, incidents and other delays.

Check live traffic conditions for the M4 motorway, reporting accidents, roadworks, congested hotspots and traffic jams on the M4.

1 天前 · The closure is in both directions and drivers have been advised to avoid the area around the M4 if they can.

The M4 carries over 130,000 vehicles every day, according to data from Highways England. The starting point for it is Chiswick, and it ends at Pont Abraham in Carmarthenshire. The full length of the M4 motorway is 189 miles, and M4 traffic passes several major cities and towns along the route, including Reading, Bristol, Cardiff and Swansea.

11 小时之前 · There could be possible delays, road closures and roadworks taking place across Wales this weekend. As many will try and head out this weekend, drivers are warned to avoid any potential ...

We'll close the M4 westbound between junctions 6 and 7 for urgent resurfacing. We'll close the road from 6am Saturday 15 March and reopen it by 6am Monday 17 March.