Map of M4 Motorway Junctions
Map of the M4 motorway junctions.
To the West the M4 joins the M5 at M4 Junction 20 which heads north to Devon Cornwall and the South West of England.
The Western end of the M4 is in South Wales Junctions 23 to 48.
Bridgend is on Junctions 25 to 37, M4 Junctions 44 and 45 for Swansea,
Junctions 30 to 33 for Cardiff and Junctions 24 to 28 for Newport.
At the eastern end of the M4 is London, with Junctions for Slough,
Reading, Newbury, Swindon and Bristol on the way to Wales in the West.
How Do I Find M4 Traffic News?
type the search words in the search facility towards the top right of this page and click "search".
M4 eastbound between J21 and J20 | Eastbound | Roadworks
Wed, 22 Oct 2014 19:54:24 BST
On the M4 eastbound between junctions J22 and J20, expect delays of up to 10 mins at peak times due to roadworks closing two lanes, from 8 pm on 25 October 2014 to 6 am on 26 October 2014.
M4 J2 eastbound exit | Eastbound | Broken Down Vehicle
Wed, 22 Oct 2014 23:25:42 BST
M4 Current Traffic Incidents
On the M4 eastbound exit slip at junction J2 , minor delays are possible due to a broken down vehicle closing one lane. Normal traffic conditions expected from 1:30 am on 23 October 2014.
Latest M4 News
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