Route
Junction number
12
Markerpost
73
Name
Theale Interchange
Terminus
Not a terminus
Other routes
A4
Authority
Restricted turns
Full access
Services
No services
M4 J12 Theale Interchange
Layout and signage
|
Theale Reading (W) A4 |
A4 |   |
A4 |
Theale Reading (W) A4 |
Lane configuration
- Lane 1 is gained from the entry sliproad.
- Lane 2 continues, with option to exit.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
- Lane 1 exits and does not return.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
Other events
Variable Speed Limits apply
National Speed Limit begins
What's new
All change
In July 2024, a new Government entered office with a very different set of priorities. What does it mean for a faltering roads programme?
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.
Have you seen...
Sir James Drake
County Surveyor and Bridgemaster for Lancashire in the 1950s and 60s, Drake was instrumental in the motorway revolution.
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