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> 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. Instead of waiting for a signal, you get a free left turn.

https://www.npr.org/2024/05/28/1243933142/diverging-diamond-interchange-chlewicki