Route
Junction number
3
Markerpost
22.0 km
Name
Cranford Parkway Interchange
Terminus
Not a terminus
Other routes
A312
Authority
Restricted turns
Full access
Services
No services
M4 J3 Cranford Parkway Interchange
Layout and signage
Heathrow  Harrow Hounslow A312 |
A312 | 
|
A312 |
Heathrow T4 & Cargo Feltham Hayes A312 |
Lane configuration
- Lane 1 exits and does not return.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
- Lane 1 is gained from the entry sliproad.
- Lane 2 continues, with option to exit.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
Other events
60mph speed limit begins
Variable Speed Limits apply
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...
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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