Evaluation of the Equity of Bikeshare System Accessibility: A Case Study of Chicago

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Meng, Chao
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Bikeshare is a new type of shared economy transportation mode which became popular in the U.S. in a short period of time. To ensure equal access to transportation system between groups with different social characteristics is an important aspect of social equity. This paper aims to identify if there are significant differences existing in demographic characteristics of people who live within 0.25 mile of bikeshare stations. Demographic characteristics include race, income level, education level, and language proficiency. The content includes a brief overview of history of bike share, current trend of bike share in the U.S., a case study of Divvybikes in Chicago, IL, and a brief introduction of spatial analysis process. A data analysis was then conducted on the demographic data of people living near Divvybikes stations in order to calculate the ratio of groups with different demographic characteristics who are more accessible to bike share. The ratio was used to determine if there is adverse impact on vulnerable groups based on The 80% Rule. Several spatial analysis maps revealing spatial autocorrelation of equity and hotspots of inequity were created by calculating Moran’s I and Getis-ord Gi index. Finally, limitations and recommendations for the equity of bike share system accessibility are provided. The results indicate that at least 33 percent of stations’ ratios are below 0.8 for all demographic characteristics categories, except for gender, which means that inequity of bikeshare system accessibility between exists.
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