As you enter the interchange, the right and left sides of the road cross over each other at a stop light. You are, in fact, driving on the left side of the road at this point. From there, left turns become a lot easier, because there's no oncoming traffic in the way.
That means diverging diamond interchanges can be both more efficient and safer than conventional intersections with left turn lanes. There are now more than 200 of them across the U.S., in more than 30 states.
"Safety was the big question." The state put the first diverging diamond at a notoriously traffic-clogged intersection in Springfield where it could often take as long as 20 minutes to make a left turn.
#diverging-diamond-interchanges #traffic-efficiency #safety-improvements #transportation-engineering
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