Detroit, Michigan
A Technology-Focused Public-Private Partnership to Reduce Crime
Project Overview
Project Greenlight Detroit (PGLD) implemented a collaborative approach towards crime reduction using CCTV. What differentiates PGLD’s strategy from others that use video monitoring to deter crime, is the partnership that is established between business and property owners and police. The implementation process involved installing high-quality video systems with visible green lights and signage, in and around retail, service, and multi-unit residential locations. Implementation also involved monitoring the cameras in a Real-Time Crime Center, priority call responses, and supportive collaboration between the Detroit Police Department (DPD) and PGLD participants.
Methods and Findings
Research Design
The SPI used multiple methods to better understand and evaluate PGLD. A detailed process assessment was conducted involving qualitative research methods. Researchers used a quasi-experimental design to calculate the effect of Green Light on a variety of crime outcomes relative to a sample of comparison addresses.
Findings
- Increase in reporting of crime, particularly property and disorder offenses, to the police.
- Incidents that were cleared by arrest increased at PGLD locations compared to non-PGLD locations.
- PGLD locations tended to have higher rates of crime, both before and after implementation of PGLD, than a similar sample of parcels that did not participate in PGLD; these higher rates of crime likely motivated participation in PGLD. Fatal and nonfatal shootings have declined 27 percent since 2016.
- Carjacking declined substantially following the introduction of PGLD.
- Overall crime trends indicate that these strategies have improved public safety in Detroit; however, it is important to note that implementation occurred during a period of multiple crime and violence reduction strategies.
- Evaluation was complex and the nature of the program made it difficult to assess trends in crime; therefore, readers should take this into consideration.
