Interchanges

The UK's first four-level interchange opened in 1966. Relive some of the wonder and excitement of this icon of the motorway era with the book published to mark its completion.

Redditch is home to something extraordinary. Something big, and absurd, and noticed by almost nobody. Redditch has a cloverleaf interchange.

Back in 1972, one Birmingham newspaper found Spaghetti Junction so devilishly complex that it published a pull-out-and-keep guide to navigating it.

Free-flowing, resizeable and also quite pretty.

A cheap and cheerful way to fully grade separate two intersecting roads.

A clever improvement on the cloverleaf.

It is big, and it is clever.

Four symmetrical loops — it's impossible to miss a cloverleaf. If you can find one, that is.

The simplest free-flowing three-way connector.

Three levels of road, three roads connected, three ways to build it.

The true British interchange.

A junction with no bridges and not much choice if you're on the side road.

Halfway between a diamond and a roundabout interchange.

A conventional, basic motorway-to-road connection.

It might be the simplest type of interchange there is. One way on and one way off: a fork in the road.

Officially the seventh most frightening thing on the road network - but actually it might just be the most efficient junction ever designed.