Program Profile: Data-Driven Approaches to Crime and Traffic Safety (DDACTS) in Kansas

This is a law-enforcement model in which both location-based crime and automobile crash data is analyzed to determine where such incidents disproportionately occur (“hot spots”) and to employ targeted traffic enforcement strategies. The program is rated Promising. The areas of targeted enforcement experienced statistically significant declines in robberies, burglaries, and traffic crashes.

A Promising rating implies that implementing the program may result in the intended outcome(s).

Program Goals

Data-Driven Approaches to Crime and Traffic Safety (DDACTS) is a law-enforcement model in which both location-based crime and automobile crash data is analyzed through geo-mapping to determine problem locations, or “hot spots” (areas of high incidence of crimes and crashes) to employ targeted traffic enforcement strategies. The goal of DDACTS is to reduce crime, crashes, and traffic violations, as a means of improving the quality of life in the community.

Program Components

DDACTS implementation is based on the following seven guiding principles of comprehensive, community-based law enforcement:

1. Partners and stakeholder participation: Attain stakeholder and partner input and engagement.
2. Data collection: Review the current data collection and analysis system, select mapping software, and create a plan to collect crash, crime, calls for service, and enforcement data. 
3. Data analysis: Develop a clear process for analyzing data and developing reporting procedures.
4. Strategic operations: Select law-enforcement strategies and tactics based on findings from data analysis and develop a comprehensive operational plan to provide the framework for monitoring, evaluating, and adjusting the strategies. Develop an implementation plan.
5. Information sharing and outreach: Share progress and garner feedback from community members, other partners, and stakeholders, and develop a plan for communicating about DDACTS through the media.
6. Monitoring, evaluation, and adjustment: Use the findings from the data analyses to make adjustments to DDACTS field operations. Document and report changes to data sources, mapping techniques, reallocation of resources and staff, training, etc.
7. Outcomes: Identify specific outcomes (such as changes in calls for service and gang violence incidents), as well as administrative outcomes (such as changes in personnel and equipment, cooperation, and community support), determine how they will be measured, and determine the party responsible for monitoring and evaluating.

For a link to the DDACTS Operational Guidelines, see Implementation Information.

Program Theory 

DDACTS is based on the spatial distribution of crime in “hot spots,” in which a small percentage of addresses account for a large number of calls for service or crime (Sherman et al. 1989). DDACTS is also based on crime pattern theory, which involves the convergence individuals and targets in places (“crime attractors”) where some gravitate to commit crime, such as bar districts, retail drug markets, and large parking lots (Brantingham and Brantingham 2008). Deterrence theory serves as the motivation for increasing highly visible traffic enforcement in hot spots for crime and traffic crashes.

Study

Bryant and colleagues (2014) conducted a pre- and posttest comparison of means with two comparison groups to determine the effects of the DDACTS initiative on crimes and automobile collisions in the target zone of Shawnee, Kansas. The treatment area was the DDACTS zone (the 75th Street corridor between Switzer Road and Quivira Road); the two comparison areas were in the control zone along Shawnee Mission Parkway and the rest of Shawnee (areas not included in either the target zone or the control area).

The pretest included the 3 years of crime and traffic collision data prior to the implementation of DDACTS on July 6, 2010. The posttest included the 3 years of crime and traffic collision data after the implementation of DDACTS on July 6, 2010. The researchers extracted, cleaned, and analyzed data from the police records management system (PRMS), using the Automated Tactical Analysis of Crime (ATAC) Workstation software. The outcomes of interest were total target crimes, which included auto burglary, auto theft, robbery, and total vehicle collisions (including collisions with and without injuries). 

Study

Bryant and colleagues (2015) compared trends in crime and automobile accidents over a 6-year period (3 years prior to the Data-Driven Approaches to Crime and Traffic Safety (DDACTS) policy change and 3 years following the DDACTS policy change) in target and comparison areas in Shawnee, Kansas. The DDACTS “hot spot” area was determined through the co-analysis of crime and traffic accident data. The DDACTS area comprised 2 percent of the city’s total land area and 7.5 percent of its population, but accounted for 10.3 percent of the city’s Part 1 violent crimes and a disproportionate number of traffic accidents. The comparison area was selected because it was similar to the DDACTS area in terms of space, land use, and crime.

DDACTS was initiated on July 6, 2010. The pre-implementation period lasted between July 6, 2007, and July 5, 2010. The post-implementation period lasted between July 6, 2010, and July 5, 2013. The researchers conducted analyses in both the DDACTS target area and the comparison area.

Bivariate analyses and interrupted time series (ITS) analysis were conducted to determine the impact of the DDACTS model on robberies, commercial and residential burglaries, and vehicle collisions.

All line personnel, including sergeants, officers, detectives, and dispatchers, receive training on Data-Driven Approaches to Crime and Traffic Safety (DDACTS) philosophy and guiding principles, provided by law-enforcement executives.

Law-enforcement agencies interested in obtaining technical assistance on DDACTS or identifying local partnerships may contact the National Highway Traffic Safety Administration, Bureau of Justice Assistance, or National Institute of Justice.

These sources were used in the development of the program profile:

These sources were used in the development of the program profile:

Following are CrimeSolutions-rated programs that are related to this practice:

Hot Spots Policing

Hot spots policing strategies focus on small geographic areas or places, usually in urban settings, where crime is concentrated. Through hot spots policing strategies, law enforcement agencies can focus limited resources in areas where crime is most likely to occur. This practice is rated Effective for reducing overall crime and rated Promising for reducing violent, property, public order, and drug and alcohol offenses.

Evidence Ratings for Outcomes

	Crime & Delinquency - Multiple crime/offense types
	Crime & Delinquency - Violent offenses
	Crime & Delinquency - Property offenses
	Crime & Delinquency - Public order offenses
	Crime & Delinquency - Drug and alcohol offenses

Problem-Oriented Policing

These analytic methods are used by police to develop crime prevention and reduction strategies. The practice is rated Promising and led to a significant decline in crime and disorder.

Evidence Ratings for Outcomes

Crime & Delinquency - Multiple crime/offense types

Why might a practice's outcome ratings differ from the ratings of specific programs encompassed by that practice?