Apply HLM to analyze government policies influence the accessibility of sidewalks

In the long term intent of the Americans with Disabilities Act (ADA) that publicly available services along a public street be accessible to people with disabilities via a continuous, unobstructed pedestrian circulation network. Many countries follow the concept of ADA and implement relevant laws. This study supposes that government policies will affect the barrier-free sidewalks environment. The government policies are organization level, and the accessibility of sidewalks is Individual level. Hierarchical linear modeling (HLM) can handle the relationship with different levels. With the result, the related law did not influence the situ performance of sidewalks. Only managing sidewalks plan and budget has mediational effects. It means that the related law is long-term effect and the sidewalk accessibility assessment process will be modified.