Final answer:
Pedestrians must walk close to the left-hand edge of the roadway when there are no sidewalks outside a business or residential district to ensure safety.
Step-by-step explanation:
When there are no sidewalks outside of a business or residential district, pedestrians must walk close to their left-hand edge of the roadway. This is because walking on the left-hand side of the road allows pedestrians to face oncoming traffic and have a clear view of approaching vehicles, reducing the risk of accidents. By walking on the left-hand edge of the roadway, pedestrians can also be more visible to drivers, increasing their safety.
Learn more about Pedestrian safety