Route
Junction number
3
Markerpost
30.8
Name
Roehyde Interchange
Terminus
Not a terminus
Other routes
A414, A1001
Authority
Restricted turns
Some turns restricted
Services
No services
A1(M) J3 Roehyde Interchange
Layout and signage
|
St Albans A414 |
A1001 A414 |
  |
A1001 |
St Albans A414 Potters Bar A1001 |
Lane configuration
- Lane 1 is gained from the entry sliproad.
- Lane 2 continues, with option to exit.
- Lane 3 continues ahead.
- Lane 1 exits and does not return.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
What's new
Schrödinger’s speed limit
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.
Sorry, wrong number
Road numbering is a system with clear rules. What happens when the people responsible for numbering roads don't follow them?
We need to talk about Wisley
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?
Have you seen...
New Medway Viaducts
Taken over the course of two years, from 2002 to 2003, these sixteen images chart the construction of two new bridges alongside the M2 Medway Viaduct.
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