Final answer:
When sidewalks are unavailable, pedestrians may need to walk on the road or its shoulder, emphasizing the importance of pedestrian safety and vigilance to avoid traffic.
Step-by-step explanation:
A pedestrian may need to utilize the road or the shoulder of the road if there aren't sidewalks. Pedestrian safety is a paramount concern, especially in busy areas such as school campuses or city intersections. Without sidewalks, pedestrians are put in potentially hazardous situations where they must be vigilant and cautious to avoid traffic. It's important for pedestrians to be aware of their surroundings, follow any available traffic signals, and make themselves visible to drivers. In situations where sidewalks are unavailable or insufficient, community efforts can be directed toward improving pedestrian infrastructure to ensure safer travel for all.