Community-engaged crime prevention through environmental design and reductions in violent and firearm crime.

In the U.S., crime and violence are concentrated in cities that have lost industry and population due to economic disinvestment and structurally racist policies. Researchers, practitioners, and policymakers have called for community-level approaches that reduce violence in these cities by improving unsafe physical environments, increasing social equity and cohesion, and engaging community members in neighborhood change. We tested Busy Streets Theory by examining how community-engaged Crime Prevention through Environmental Design (CPTED) strategies implemented by a community coalition may reduce violent and violent firearm crime incidents in Flint, Michigan, a legacy city in the Midwestern U.S. We used linear mixed effects regression models to examine how the annual aggregate intensity of physical and social CPTED activities from 2015 to 2018 was associated with changes in annual violent crime levels from 2016 to 2019 for 505 street segments in Flint, MI. After adjusting for baseline violent crime density, neighborhood disadvantage, property maintenance, and spatially lagged violent crime density, we observed that higher levels of community-engaged CPTED intensity were associated with steeper declines in violent crime density over time (β = -0.14, p < 0.001). Similarly, higher levels of community-engaged CPTED intensity were associated with steeper declines in violent firearm crime density over time (β = -0.19, p < 0.001). The results suggest the vital role that creating busy streets through community-engaged CPTED may play in community violence prevention.