Community design and transportation safety
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2011-03-06
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Edition:Final report
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NTL Classification:NTL-SAFETY AND SECURITY-SAFETY AND SECURITY ; NTL-SAFETY AND SECURITY-Highway Safety
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Abstract:In this research we carry out a spatial analysis of 11 years of crash data in 24 medium-sized
California cities. The cities were selected from an initial database of over 150 California
cities to best represent a geographically diverse collection of 12 medium-sized cities with
good safety records and 12 with poor safety records with respect to the number of road
fatalities per capita in the transportation system. Street network measures were combined
with street characteristics, socioeconomic data, traffic flow information, and over 230,000
individual crash records geo-coded in a Geographic Information System (GIS) database. The
analysis was conducted at the U.S. Census Block Group level of geography for over 1000
distinctly populated Block Groups. Statistical negative binomial regression crash models
were estimated for three response variables: total number of total crashes, severe injury
crashes, and fatal crashes.
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Main Document Checksum:urn:sha256:529c4d81e18523852e6dfa576755e83500c80da73429b7d07200d86cc357f615
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