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The practice of proactive traffic stops

Xiaoyun Wu (Department of Criminology, Law and Society, George Mason University, Fairfax, Virginia, USA)
Cynthia Lum (Department of Criminology, Law and Society, George Mason University, Fairfax, Virginia, USA)

Policing: An International Journal

ISSN: 1363-951X

Article publication date: 11 December 2019

Issue publication date: 9 April 2020

505

Abstract

Purpose

Empirical research suggests that traffic enforcement is the most common type of proactive activity police officers engage in on a daily basis. Further, agencies often use traffic enforcement to achieve both traffic safety and crime control. Given these goals, the purpose of this paper is to investigate whether (and to what extent) officers are accurately targeting their proactive traffic enforcement with crime and vehicle crashes in two agencies.

Design/methodology/approach

The study examines traffic enforcement patterns in two agencies to see whether proactive traffic enforcement aligns spatially with crime and vehicle crashes. This study employs negative binomial regression models with clustered standard errors to investigate this alignment at the micro-spatial level. Key variables of interest are measured with police calls for service data, traffic citation data and vehicle crash data from two law enforcement jurisdictions.

Findings

High levels of spatial association are observed between traffic accidents and crime in both agencies, lending empirical support to the underlying theories of traffic enforcement programs that also try to reduce crime (i.e. “DDACTS”). In both agencies, traffic accidents also appear to be the most prominent predictor of police proactive traffic enforcement activities, even across different times of day. However, when vehicle crashes are accounted for, the association between crime and traffic stops is weaker, even during times of day when agencies believe they are using proactive traffic enforcement as a crime deterrent.

Originality/value

No prior study to authors knowledge has examined the empirical association between police proactive traffic activities and crime and traffic accidents in practice. The current study seeks to fill that void by investigating the realities of traffic stops as practiced daily by police officers, and their alignment with crime and vehicle crashes. Such empirical inquiry is especially important given the prevalent use of traffic enforcement as a common proactive policing tool by police agencies to control both traffic and crime problems.

Keywords

Citation

Wu, X. and Lum, C. (2020), "The practice of proactive traffic stops", Policing: An International Journal, Vol. 43 No. 2, pp. 229-246. https://doi.org/10.1108/PIJPSM-06-2019-0089

Publisher

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Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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