Route
Junction number
40
Markerpost
289.4 km
Name
Taibach Interchange
Terminus
Not a terminus
Other routes
A4107
Authority
Restricted turns
Full access
Services
No services
M4 J40 Taibach Interchange
Layout and signage
|
Port Talbot A4107 |
A4107 | 
|
A4107 |
Port Talbot A4107 |
Lane configuration
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
Other events
National Speed Limit begins
50mph speed limit begins
What's new
The sunlit uplands
On Saturday 31 May something historic happened. The Heads of the Valleys Road was finally complete.
Grand openings
Our much-loved Opening Booklets section has two new publications for you to explore, and we’re making some overdue changes to make them easier to find and easier to read.
Silver bullet
The Silvertown Tunnel is finally open for business. One question remains: what’s it for?
Have you seen...
Oxfordshire Signs
This is the story of one man at Oxfordshire County Council who pre-empted the development of modern road signs - much to the annoyance of the men from the Ministry.
About this page
Published
Last updated
Published
Last updated
