re: Navigating a Diverging Diamond Interchange

Springfield, MO has 3 or 4 of them now and they have improved traffic flow at congested intersections amazingly well. They are a great modification to a traditional overpass exit when there is not room for a cloverleaf. It's a little odd at first, but if you aren't retarded or drunk it's pretty easy to navigate through one.

That looks incredibly dumb

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What is the purpose of this configuration?

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More efficient because there are no signalized left turns.

There are roundabouts all over La doing just fine


The walker folks will catch on pretty quickly.


I worry about the truck traffic and turn radius issues


I've heard some bad stories about the ones in Hammond but haven't been that way in a long time.

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It's to avoid creating the costly clover leaf you see on typical exits.

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I noticed this immediately

Efficient traffic calming solution IMO

It's basically a safer and more efficient way to move cars through an interchange. It is also not nearly as expensive as other types non-standard interchanges, making it more attractive for DOTs. Expect to see these popping up in many cities across the US.

one of these in d'iberville, ms. when it first opened it was a clusterfrick but now it's very smooth

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What is the purpose of this configuration?

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Eliminate left turn signals from the traffic light cycle.

Single Point Interchange is better, but more expensive. Both are much better than a typical diamond.

It's funny that they had to make a diagram to explain how to navigate this.