The Displaced Left Turn Intersection implements unopposed left turns at intersections by moving traffic over to the other side of the road. Traffic crosses opposing through lanes at a separate signalized intersection before the main intersection, entering a parallel left turn lane separated from opposing lanes. At the main intersection, left turning and through traffic move simultaneously, increasing efficiency and safety by reducing conflict. Traffic signals at the advance crossovers are coordinated with the main intersection to minimize stops.
The DLT is best-suited to intersections with moderate to high overall traffic volumes with very high or unbalanced left turn volumes.