Route
Junction number
3
Markerpost
22.0
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
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National Highways are spending a third of a billion pounds rebuilding one of the most congested junctions on the M25. Is it money well spent?
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Oxford's Zero Emission Zone is just a trial, but transport policy in Oxford has become the catalyst for pitched battles and drawn in protestors from across the UK. What's happening to this genteel university town?
2023 end of year message
It’s been a quiet year for Roads.org.uk, but we will be back to our usual schedule soon.
Have you seen...
Scammonden Bridge
If you've ever been on the M62 across the Pennines, you'll know the one. It's the huge arched bridge 120ft above the road. And this is what it's like when you're standing on top of it!
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