Final answer:
The flashing signal suggests that pedestrians should finish crossing the street. Traffic signals help maintain pedestrian safety and regulate vehicle speed, especially in heavy traffic areas.
Step-by-step explanation:
The flashing signal in the picture likely indicates that pedestrians should finish crossing the street if they have already started. Traffic signals are key in ensuring pedestrian safety, particularly in areas with high traffic density like a campus intersection. Traffic signals prompt vehicles to slow down and provide safe crossing moments for pedestrians, reducing the likelihood of accidents and fatalities.