The Geography of Deterrence: Exploring the Small Area Effects of Sobriety Checkpoints on Alcohol-Impaired Collision Rates Within a City

作者: Samuel Nunn , William Newby

DOI: 10.1177/0193841X11405139

关键词:

摘要: This article examines alcohol-impaired collision metrics around nine sobriety checkpoint locations in Indianapolis, Indiana, before and after implementation of 22 checkpoints, using a pre/post examination, nonequivalent comparison group analysis, an interrupted time series approach. Traffic safety officials used geographical information system (GIS) analysis to help select amid high alcohol-related clusters, then analyzed possible impacts. A post hoc examined counts rates impaired collisions dates within the 2-mile radius zones each site compared pre-to-post differences two similar time-matched control areas without checkpoints. As group, showed significant though minor declines counts, no impairment rate change. Considered together, non-downtown had more favorable than areas. After controlling for volume, monthly trend, locational effects, found that all checkpoints count post-checkpoint periods was about 19% less pre-checkpoint counts. Language: en

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