A Diverging Diamond Interchange (DDI) is an alternative interchange that improves safety, increases traffic flow, and reduces construction cost. Safety is improved by reducing the number of conflicting vehicle paths, while traffic flow is improved by eliminating the need for dedicated left-turn traffic signal phasing.
Benefits include:
Reduced opportunities for collisions.
Greater capacity and efficiency.
Reduced backup congestion.
Easier navigation.
Meets needs of all road users.
Examples of Diverging Diamond Interchanges in Michigan include:
I-75/14 Mile and I-75/Big Beaver Road in Troy
I-75/University Drive in Auburn Hills