Route
Junction number
33
Markerpost
Unknown
Name
Cardiff West
Terminus
Not a terminus
Other routes
A4232
Authority
Restricted turns
Full access
Services
Service area here
Service area name
Cardiff West
Services operator
Moto
M4 J33 Cardiff West
Layout and signage
Caerdydd (Gn) a  Cardiff (W) & Barri Barry Penarth A4232  Cardiff West
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A4232 |
Caerdydd (Gn) a Cardiff (W) & Barri Barry Penarth A4232 Cardiff West
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Lane configuration
- Lane 1 exits and does not return.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 3 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...
Operation Stack
If there's trouble crossing the Channel, you'll see the lorries queuing on the M20. What is Operation Stack? Why does it cause so much trouble? And why, more than twenty years after it started, are we still using it?
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