Route
Junction number
4
Markerpost
25.0
Name
Airport Interchange
Terminus
Not a terminus
Other routes
A408
Authority
Restricted turns
Full access
Services
No services
M4 J4 Airport Interchange
Layout and signage
|
Uxbridge Heathrow  T2 & 3A408 |
(A408) |   |
(A4) |
Heathrow T2 & 3 Uxbridge A408 |
Lane configuration
- Lane 1 exits and does not return.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
- Lane 5 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.
- Lane 5 continues ahead.
Other events
Variable Speed Limits apply
- Variable Speed Limits apply
What's new
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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.
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Have you seen...
EuroRoute
Today you can catch a train to France. You can even put your car on it, and be there in less than an hour. But in the 1980s, Euro Tunnel had competition - including plans to build a motorway across the English Channel.
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