Obstacles to Enforcement of Youthful (under 21) Impaired Driving

Preusser, David F.; Ulmer, Robert G.; Preusser, C. W. · 1992 · ROSA P / United States. National Highway Traffic Safety Administration

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Summary

This 1992 report by the Preusser Research Group, commissioned by the National Highway Traffic Safety Administration (NHTSA), investigates the disparity between the high rate of alcohol-related crashes involving drivers under 21 and their low rate of Driving While Intoxicated (DWI) arrests. The study was motivated by data indicating that young drivers are significantly overrepresented in fatal alcohol-related crashes—accounting for approximately 15.5% of fatally injured drinking drivers despite comprising only 7.8% of licensed drivers—yet are arrested for DWI at rates far below this incidence. Furthermore, DWI arrests for those under 18 had declined by 44% between 1980 and 1989, while arrests for older drivers increased. The researchers employed a multi-faceted methodology to examine national, state, and local arrest rates and identify enforcement obstacles. They analyzed data from the FBI’s Uniform Crime Reporting Program, the NHTSA Fatal Accident Reporting System (FARS), roadside surveys, and state-specific crash records. Additionally, the study involved direct consultations with hundreds of law enforcement officers, prosecutors, and highway safety officials across numerous jurisdictions to gather qualitative insights into enforcement practices and challenges. The findings confirmed that young drivers are substantially underrepresented in DWI arrest statistics compared to their presence in crash data and roadside surveys. The report identified several specific obstacles to effective youth enforcement. First, there is a geographic mismatch between where young people tend to drink and drive and where enforcement resources are typically deployed. Second, youthful drinking and driving often occurs in concentrated bursts during specific times, such as late-night weekends and at parties or youth-oriented events, overwhelming standard patrol capabilities. Third, the cues of impairment exhibited by young drivers may differ from those of older adults, complicating detection. Finally, the prosecution of cases involving low Blood Alcohol Concentration (BAC) levels, which are more common among youth, presents legal and procedural difficulties. The significance of this report lies in its identification of systemic barriers to deterring youthful impaired driving and its provision of strategies to overcome them. The authors documented model programs and system-wide approaches adopted by agencies with high youth arrest rates, offering a framework for jurisdictions to assess their own enforcement effectiveness. By highlighting the disconnect between crash involvement and arrest rates, the report underscores the need for targeted enforcement strategies that address the unique temporal, spatial, and behavioral characteristics of underage drinking and driving.

Key finding

Young drivers are arrested for DWI at rates significantly lower than their involvement in alcohol-related crashes, with enforcement obstacles including geographic mismatches, temporal clustering, and distinct impairment cues.

Methodology

dataset

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archive success 1 2026-05-23
extract success cached 2 2026-06-10
clean success 1 2026-06-01
chunk success 1 2026-06-01
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enrich success 1 2026-05-23
promote success 1 2026-05-23
summarize success llm qwen3.6-27b-prismaquant summ-v5 3 2026-06-10
tag success vector_similarity 19 2026-06-11
verify success 2 2026-06-10

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