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Urban Demographic Shift of Pedestrian and Bicyclist Collisions, Equity, and Police Enforcement

Project Description

The project addresses the increase in pedestrian and bicycle casualties by exploring geographic shifts in collision patterns and their relationship with demographic changes, police enforcement, and social equity. It investigates whether collisions disproportionately impact low-income communities of color and if such disparities are linked to historical urban segregation. The study utilizes a place typology to categorize urban contexts and analyzes pedestrian crash data over specific periods. Police enforcement data, particularly from the Racial and Identity Profiling Act of 2015, will be used to understand the correlation between enforcement and collision rates.


The project generates new insights into pedestrian fatalities' geographical distribution, connections to demographic shifts, police enforcement's role, and equity patterns. It produces a comprehensive understanding of the multifaceted factors contributing to pedestrian safety.


The research output informs safety treatments and police enforcement practices, fostering more equitable outcomes and enhancing pedestrian safety. The technical report, interactive tools, and recommendations can guide transportation policies, practices, and interventions.


06/01/2023 to 05/31/2024


San Diego State University

Principal Investigator

Joseph Gibbons

San Diego State University

ORCID: 0000-0003-2470-9068

Research Project Funding

Federal: $111,220

Non-Federal: $55,610

Contract Number


Project Number


Research Priority

Promoting Safety

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