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NCJ Number: NCJ 173398     Find in a Library
Title: "Designing Out" Gang Homicides and Street Assaults, Research in Brief
  Document URL: Text PDF 
Author(s): J Lasley
Date Published: 1998
Page Count: 6
  Series: NIJ Research in Brief
  Annotation: The use of traffic barriers to block automobile access to streets was examined to determine whether this tactic could reduce gang crime and violence in Los Angeles.
Abstract: The Los Angeles Police Department (LAPD) operated Operation Cul de Sac (OCDS) in 1990 and 1991 and placed traffic barriers in neighborhoods where gangs and accompanying gang violence had spiraled out of control. These neighborhoods had experienced the highest number of drive-by shootings, gang homicides, and street assaults in the city in the year before the project was launched. OCDS was based on the theory of situational crime prevention. The LAPD noted that in the OCDS target area, gang crime clustered on the periphery of neighborhoods linked to major roadways. The traffic barriers were intended to block the opportunities that the roadways created. Evaluation results revealed that OCDS appeared to reduce violent crime but did not affect property crime. The number of homicides and street assaults declined significantly in both years and increased after the program ended. Crime was not displaced to other areas. Findings indicated that traffic barriers can be used as part of an approach to maximize neighborhood residents' defensible space by increasing their span of control. Zones configured with the barriers heighten the visibility of suspect activities. They can be particularly effective when combined with natural guardians in the form of people who serve as informal sources of surveillance and social control. Further research should evaluate the tactic's effectiveness at other sites. Figures and 6 reference notes (Author summary modified)
Main Term(s): Juvenile delinquency prevention
Index Term(s): Traffic control equipment ; Traffic control and direction ; Policing innovation ; Violence prevention ; Gang Prevention ; Gang violence ; California
Sponsoring Agency: National Institute of Justice (NIJ)
US Department of Justice
Office of Justice Programs
United States of America

US Dept of Justice NIJ Pub
United States of America
Grant Number: 96-IJ-CX-0009
Sale Source: National Institute of Justice/NCJRS
Box 6000
Rockville, MD 20849
United States of America

NCJRS Photocopy Services
Box 6000
Rockville, MD 20849-6000
United States of America
Country: United States of America
Language: English
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