Route
Junction number
47
Markerpost
Unknown
Name
Penllergaer Interchange
Terminus
Not a terminus
Other routes
A48, A483
Authority
Restricted turns
Full access
Services
Service area here
Service area name
Swansea
Services operator
Moto
M4 J47 Penllergaer Interchange
Layout and signage
|
Abertawe (Gn) Swansea (W) A483  Swansea
|
  |
A48 A483 A48 |
Abertawe (Gn) Swansea (W) A483 Swansea
|
Lane configuration
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
What's new
A century of motorways
It's 100 years since the opening of the world's first motorway, the Autostrada from Milan to the Lakes.
Schrödinger’s speed limit
In 2022, Manchester City Council say they reduced the speed limit on the Mancunian Way to 30mph. But it’s not clear if they did. It’s not even clear if they can.
Sorry, wrong number
Road numbering is a system with clear rules. What happens when the people responsible for numbering roads don't follow them?
Have you seen...
Harry Yeadon
A civil engineer, working principally in the North West of England, responsible for many of the area's motorways.
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