Route
Junction number
12
Markerpost
73 km
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
Farewell GLC lights
Why am I all nostalgic about some street lights being replaced?
Silver bullet
The Silvertown Tunnel is finally open for business. One question remains: what’s it for?
Skid Risk, Accident, Fog
For the first time, we can share pictures of the pioneering experiment that lit up the Worcestershire countryside with enormous signs 61 years ago.
Have you seen...
London Congestion Charge
One of the world's biggest and most controversial schemes to manage traffic by charging for roadspace. You can drive in to London if you like, guv, but it'll cost you.
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