Final answer:
A circular orange sign typically signals caution, indicating that the traffic signal ahead may change or operate differently to manage traffic flow and ensure pedestrian safety.
Step-by-step explanation:
If you see a sign bearing an image of a circular orange shape, it means you should proceed with caution because the signal ahead may change or have different patterns of operation to manage traffic. In many cases, especially at intersections, vehicles speed through without regard to the posted speed limit. A traffic signal can enforce control by requiring cars to slow down and not simply speed through. Some signals may operate with a blinking red light for stopping traffic and a blinking yellow light to indicate caution for those driving in the circle.
Understanding these signs is critical for both pedestrian safety and the safety of drivers. For pedestrians, specifically students coming to or leaving campus, a traffic signal ensures they can cross at appropriate and safe times, rather than having to dodge traffic.