A turning lane is a dedicated lane allowing vehicles to slow and turn without blocking through traffic. Left-turn lanes (centre turn lanes) let turning vehicles wait for gaps without impeding following traffic. Right-turn lanes similarly facilitate turns while maintaining through movement. Turning lanes improve traffic flow and safety by separating turning vehicles from through traffic, reducing rear-end collisions and congestion. Traffic studies determine when turning lanes are warranted based on volumes, delays, and safety concerns. Development approvals may require turning lane construction when projects generate significant turning movements. Turn lane design involves proper length for deceleration and storage, clear markings, and appropriate channelization. Turning lanes are standard features on arterial roads and at busy intersections.