File:On the elevated section of the M4 - Port Talbot - geograph.org.uk - 1413284.jpg - Wikimedia Commons
Urban landscape. A section of the elevated M4 motorway above the A4 road next to houses at Brentford, London, England, UK Stock Photo - Alamy
The opening of an elevated section of the M4 motorway from Junction 1... News Photo - Getty Images
M4 closed: Fears of Olympic road chaos as motorway from Heathrow to London is closed | Daily Mail Online
M4 motorway - Wikipedia
An Elevated section of the M4 motorway at Port Talbot, South Wales, UK Stock Photo - Alamy
M4 Junctions 12 (Theale, West Berkshire) to 15 (Swindon, Wiltshire) – Weekend Closures - Stratton St Margaret Parish Council
M4 and A4 | Roads.org.uk
M4 Elevated Section Reopens
File:Before the M4 Elevated Section was built. - geograph.org.uk - 656922.jpg - Wikimedia Commons
M4 junctions 3 to 12 smart motorway upgrade - Traverse
M4 Elevated Chiswick Flyover - VolkerLaser
The opening of an elevated section of the M4 motorway from Junction 1... News Photo - Getty Images
M4 Elevated Motorway London - art of the state archive
M4 junctions 8/9 to 12 open as smart motorway – Wokingham.Today
M4 Chiswick Flyover: Hounslow drivers warned of new 30mph speed limit on major road - MyLondon
Live M4 traffic updates today as London sees as long delays and lane closure due to 'structural repairs' - Berkshire Live
M4 closed for weekend smart motorway work - BBC News
File:Junction 2 Exit from the M4 Elevated Section at Brentford (From London) - panoramio.jpg - Wikimedia Commons
File:Slip road up to elevated M4 - geograph.org.uk - 741937.jpg - Wikimedia Commons
M4 bus lane - Wikipedia
Another vacant plot – Paul Debois
M4 junctions 13 to 12 closures this weekend
Brentford's Local Web site
