Final answer:
School zone signs are not an example of a traffic signal. They serve the purpose of promoting pedestrian safety near schools.
Step-by-step explanation:
No, school zone signs are not an example of a traffic signal. School zone signs are placed near schools to indicate that drivers should slow down and exercise caution in the area because children may be present. They typically include the words 'School Zone' and may also display a speed limit.
Traffic signals, on the other hand, are devices that control the movement of vehicles at intersections and other locations. They use lights or other signals to indicate when drivers should stop, yield, or proceed with caution.
While both school zone signs and traffic signals are used to promote pedestrian safety, they serve different purposes and have different functions.