Saskatchewan Driver Education GDL Class 7 Learner Practice Test

Traffic signals are the clear indicators of a controlled intersection. They are used to manage the flow of traffic by providing specific instructions to drivers, including when to stop, go, or yield. This control is crucial at intersections where multiple roads meet, as it helps prevent collisions and promotes safe passage through the intersection. In contrast, yield signs require drivers to reduce speed and give way to other vehicles, but they do not provide the same level of control as traffic signals do. Warning signs alert motorists to potential hazards or changes in road conditions, such as upcoming curves or construction zones, but they do not control movements at intersections. Information signs offer general guidance on directions and services but also do not play a direct role in controlling traffic at intersections. Thus, traffic signals are essential for regulating traffic and ensuring safety at controlled intersections.