Abstract
This study aims to investigate the walking speed of children by age during an urban-scale tsunami evacuation drill of a nursery school, where 391 children were divided in ten groups and instructed to walk two abreast following the group's head conductor. Main results: average speed varies from 0.49 m/s (2+5 years together) to 1.29 m/s (5 years) in sidewalk, and from 0.19m/s (2+5 years together) to 0.60m/s (5 years) in overpass bridge stairs (measured in inclined plane); average speed tends to be determined by the group's head conductor speed; average speed in downstairs tends to be slower than in upstairs.
