Synthesis of Studies That Relate Amount of Enforcement to Magnitude Of Safety Outcomes
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2022-06-01
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Edition:Final Report
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Abstract:The National Cooperative Research and Evaluation Program (NCREP) identifies and funds research and evaluation projects that improve and expand State highway safety countermeasures. One such topic is measuring the impact of various amounts of traffic enforcement on changes in safety outcomes. The project team identified 80 relevant studies for inclusion in the synthesis. Current literature only supported findings related to occupant protection enforcement. No relationship between levels of enforcement and safety outcomes could be identified for distracted driving, alcohol-impaired driving, speeding, or aggressive driving. However, for all targeted behaviors, the enforcement campaigns evaluated were effective in improving safety outcomes even though the combination of these evaluations could not provide sufficient evidence to establish a relationship between the level of resources used and the magnitude of the safety improvement.
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