What is the function of a stop line at an intersection?

The function of a stop line at an intersection is primarily to indicate where vehicles must stop at a stop sign or traffic light. This line provides clear guidance for drivers, ensuring they halt at the correct position to safely assess oncoming traffic and pedestrians before proceeding. The stop line is typically painted on the road surface and is essential for maintaining order and safety at intersections, helping to prevent accidents by creating a defined stopping point.

While parking, turning lane markings, and pedestrian safety are all important aspects of roadway design, they do not capture the specific purpose of a stop line. The stop line is strictly related to ensuring compliance with traffic control signals and signs, thus playing a critical role in the flow of traffic and the prevention of collisions.