Route
Junction number
1
Markerpost
23 km
Name
South Mimms Interchange
Terminus
Not a terminus
Other routes
M25, A1081
Authority
Restricted turns
Full access
Services
Service area here
Service area name
South Mimms
Services operator
Welcome Break
A1(M) J1 South Mimms Interchange
Layout and signage
(M11 
South Mimms
Lane configuration
- Lane 1 exits and does not return.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 1 is gained from the entry sliproad.
- Lane 2 continues, with option to exit.
- Lane 3 continues ahead.
Other events
Start of motorway regulations
End of motorway regulations
What's new
Hello, here's my ridiculous side project
An introduction to what I write, and why I write it, and where my strange new road sign simulator fits in to all this.
London, in a new light
It was specially designed never to be noticed. And now it's disappearing, nobody has noticed its absence. It's London's own bespoke street light.
The Ringways Map is here
The wait is over! The full map of the Ringways, London’s unbuilt urban motorway network, is now online. Not even the system's planners had anything like this.
Have you seen...
M6 Preston Bypass
The "Preston By-Pass" was Britain's first motorway, opened in 1958. These books show the road as it was on opening day and share some of the thrill of this pioneering project.
About this page
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Published
Last updated
