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                            Library & Multimedia
 A Longitudinal Quasi-Experimental Study of Violence and Disorder Impacts of Urban CCTV Camera Clusters
NCJ Number
              305922
Journal

*Criminal Justice Review* Volume: 44 Issue: 2 Dated: June 2019 Pages: 148-164
Author(s)
          Jerry H. Ratcliffe;
                        Elizabeth R. Groff
Date Published

June 2019
Length
              17 pages
Annotation
              This study addressed methodological challenges that have weakened some previous studies of the crime-reduction effectiveness of closed-circuit television (CCTV) surveillance systems.
Abstract
              These have included the use of arbitrary fixed distances to represent estimated camera deterrence areas and a lack of control for camera sites with overlapping surveillance areas. The current article overcomes the first of these challenges by using camera view areas individually constructed by researchers viewing and manipulating cameras to determine precise camera viewsheds. The second challenge is addressed by grouping cameras into clusters of combined viewshed areas. The longitudinal crime and disorder reduction effectiveness of these clusters of overlapping CCTV cameras is tested in Philadelphia, PA. Multilevel mixed-effects models with time-varying covariates and measures from a noncomparable control area are applied to 10 years of crime data (2003–2012) within the viewsheds of 86 CCTV cameras grouped into 13 clusters. Models applied across violent street felonies and disorder incidents find no significant impact associated with the introduction of CCTV surveillance. Potential reasons for this are discussed. (Published abstract provided).
      
  
          Additional Details
Grant Number(s)
        2009-IJ-CX-0012


  
  
        
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        NIJ-Sponsored


  
  
        
  Publication Type
        Research (Applied/Empirical)


  
  
        
  Award
        Can Video Surveillance Reduce Crime? Quantifying the Size and Goegraphic Extent of CCTV's Impact
    
  
  
Date Published: June 1, 2019
    
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      PatentsRelated Topics
        
                Cluster analysis
        Longitudinal studies
        Closed Circuit Television (CCTV)
        Crime reduction
        Civil disorders



  
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