Route
Junction number
28
Markerpost
229.2 km
Name
Tredegar Park Interchange
Type
Non-standard interchange
Terminus
Not a terminus
Other routes
A48, A467
Authority
Restricted turns
Full access
Services
No services
M4 J28 Tredegar Park Interchange
Layout and signage
|
Casnewydd — Newport A48 Risca Brynmawr A467 |
A467 | 
|
A48 A48 |
Casnewydd — Newport A48 Risca Brynmawr A467 |
Lane configuration
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
Other events
50mph speed limit begins
National Speed Limit begins
What's new
Signs and sensibility
The one great attempt to make London’s streets logical - and how one retired chauffeur’s favourite routes changed the way you get around the capital.
A bridge under troubled bridges
A bridge that was ruined by another bridge, and a type of highway planning beyond any of the UK’s worst nightmares.
The monster seen from below
What might it have been like to stand in one spot and witness the arrival, and the uncertainty, of plans for an urban motorway in West London?
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
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Last updated
Published
Last updated
