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Loukaitou-Sideris and González Study Link Between Gentrification and Traffic Collisions

Anastasia Loukaitou-Sideris, professor of urban planning and associate provost for academic planning at UCLA; Silvia R. González, a doctoral student and researcher at the Center for Neighborhood Knowledge; and Karen Chapple of UC Berkeley conducted a study to analyze the relationship between gentrification, traffic safety and transit-oriented development (TOD). The study, “Transit Neighborhoods, Commercial, Gentrification, and Traffic Crashes: Exploring the Linkages in Los Angeles and the Bay Area,” analyzed the number of collisions near rail stations in L.A. County and the San Francisco Bay Area in both gentrified and non-gentrified areas. The authors had hypothesized that residential and/or commercial gentrification leads to more traffic collision due to increased traffic and increased use of two or more modes of transportation, but the study did not find a significant relationship between residential gentrification and traffic safety in Los Angeles County or the Bay Area. It did, however, find that pedestrians and cyclists are at a higher risk of collision around commercially gentrified stations. Loukaitou-Sideris, González and Chapple suggest that policymakers and urban planners pay special attention to commercially gentrified areas. They conclude that “complete street strategies, traffic calming measures, protected bike lanes, controlled intersections, and other traffic safety improvements and regulations can help respond to this threat” of traffic collisions around commercially gentrified TOD stations. The study is part of an ongoing research partnership with the Urban Displacement Project, a research and action initiative at UC Berkeley.