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UK diamond junction

UK Diamond junction.
Number of limited access roads 1
Number of surface roads 1
Levels 2
Bridges required 1
Access Full in all directions
Estimated number in UK~250
First built in UK ca. 1927.
Advantages
Low construction costs, with just one bridge and very little land-take.
Easy to upgrade later by adding traffic lights at the top of the slip roads, for example.Intuitive to understand and navigate.
Simple to modify the design to fit into difficult locations.
Disadvantages
Low capacity because of the junctions between the slip roads and the minor road.
Difficult to provide connections for more than one surface road.
Difficult to substantially upgrade to, for example, a roundabout interchange.
a few intresting facts and pros and cons. hope you all enjoy. leave feed back and recommendations