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Safety Performance Evaluation for Elder Pedestrians and Bicyclists: Using ArcGIS to Link the Contributing Factors and Determine the Characteristics of the Patterns

Authors: Hongyun Chen*, Embry-Riddle Aeronautical University
Topics: Transportation Geography
Keywords: Pedestrian Crashes, Aging, Bicyclists, ArcGIS
Session Type: Poster
Presentation File: No File Uploaded


In 2030, it is projected that over 20% of the population in the United States will be those 65 years and over. In some states, it will be even more aging. For example, by the year 2020, it is estimated that approximately 40.8% of Florida residents will be reaching their 50 years of age or over. Studies have been proved that walking and cycling are the most popular form of exercise among elder adults. However, the safety issues for the elder pedestrians and bicyclists have not been well addressed. Elder adults are even more vulnerable as pedestrians and bicyclists. Even though the population group (65+) accounts for 13.7% of overall population in the United States, 19% percent of all pedestrian fatalities (1,002 of 5,376) were people aged 65 and older. The fatality rate for the age group over 65+ is the highest among all the groups.

Not many researches have been done or countermeasures that have been developed for this age group. This project is to understand the crash patterns of elder pedestrians and cyclists (65 years old and over), identify the types of prone locations (signalized intersections, unsignalized intersections, corridors, etc.), determine the major contributing factors at each type of the locations by using ArcGIS, and collect the proper and potential countermeasures at respectively.

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