Which interchange design has eliminated the need for left turn arrows?

The diverging diamond interchange is a unique design that effectively eliminates the need for left turn arrows by facilitating efficient traffic flow. In this design, vehicles on the major road cross to the opposing side briefly while moving through the interchange, allowing left-turning vehicles to merge directly onto the crossroad without needing dedicated left turn signals. This configuration reduces potential conflict points, minimizes delays, and enhances overall safety. As a result, the diverging diamond interchange simplifies the traffic signal operation by removing the necessity for left turn arrows, which are typically used to manage left turns at more traditional designs. This innovative design aims to streamline traffic and improve the overall efficiency of vehicle movements through the interchange.