Final answer:
A Pentagon shaped sign indicates a school zone, which is designed to enhance pedestrian safety around schools.
Step-by-step explanation:
A Pentagon shaped sign indicates there is a school zone. School zones are critical for pedestrian safety, as they alert drivers to the presence of children and the need for reduced speed. Traffic signals are often implemented in these areas to ensure that students and others can cross the intersection safely instead of having to dodge traffic. Hence, A Pentagon shaped sign indicates a school zone, which is designed to enhance pedestrian safety around schools.