The Left Lane Must Turn Left sign (R3-7L) is a regulatory traffic sign used to require vehicles in the left lane to make a left turn at an intersection. Commonly installed on multilane roadways, signalized intersections, and turn-controlled approaches, this 30" x 30" sign provides clear lane-use direction to improve traffic flow and reduce conflicts. Manufactured to MUTCD standards, it offers high visibility, durability, and long-term performance for municipal, contractor, and commercial traffic control applications.
