Evaluation of Responsible Beverage Service to Reduce Impaired Driving by 21- to 34-Year-Old Drivers
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Summary
This study evaluates the effectiveness of a multicomponent intervention combining Responsible Beverage Service (RBS) training and targeted law enforcement to reduce impaired driving among drivers aged 21 to 34. This demographic represents a high-risk group for alcohol-related crashes, with approximately half of intoxicated drivers having their last drink at licensed bars or restaurants. The research was motivated by evidence that over-serving and serving obviously intoxicated patrons are significant risk factors for alcohol-related harm. The primary objective was to determine if integrating RBS training with visible enforcement could reduce over-service practices, thereby lowering Driving While Intoxicated (DWI) arrests and impaired-driving-related crashes. The evaluation was conducted in two communities: Monroe County, New York, and Cleveland, Ohio, between 2008 and 2011. Researchers identified "problem bars" using Place-of-Last-Drink (POLD) data from DWI arrests and assigned them to either intervention or control groups. The intervention included outreach, RBS training for servers and managers, and enhanced enforcement actions by local law enforcement and liquor control agencies. The study design compared intervention bars to control bars within the treatment communities and compared the treatment communities to control communities (Onondaga County, NY, and Toledo, OH). Data collection methods included pseudo-patron assessments to measure service refusal rates, breath tests of actual bar patrons to measure Blood Alcohol Concentration (BAC), bar assessments, and archival data on DWI arrests, traffic crashes, and police calls-for-service. Results indicated that the intervention successfully altered server behavior and patron intoxication levels. In both communities, servers in intervention bars were significantly more likely to refuse service to pseudo-patrons simulating intoxication compared to control bars. Furthermore, mean BAC levels among patrons leaving intervention establishments were lower than those leaving control bars, with fewer patrons exhibiting high levels of intoxication (BAC ≥ .15). At the community level, the intervention correlated with reduced rates of self-reported impaired driving among young adults and a decrease in the proportion of DWI arrests linked to intervention bars. While changes in overall crash rates and DWI arrests varied, the data consistently showed a reduction in the prevalence of highly intoxicated patrons leaving licensed establishments. The study concludes that RBS training, when coupled with visible and sustained enforcement, is an effective strategy for reducing alcohol over-service and patron intoxication. These findings validate prior research suggesting that restricting alcohol at the point of sale can mitigate impaired driving risks. The authors imply that widespread implementation of such multicomponent interventions could significantly reduce not only impaired driving but also other alcohol-attributable harms. However, they note that successful implementation requires overcoming challenges such as bar owner resistance and maintaining consistent enforcement efforts.
Key finding
The implementation of responsible beverage service training combined with targeted enforcement significantly reduced the serving of alcohol to obviously intoxicated patrons and decreased the proportion of DWI arrests involving those specific establishments.
Methodology
field_study
Provenance
The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed. Discovered via bulk_ingest_rosap on 2026-05-23 (6 acquisition events logged).
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | rosap | — | — | 2 | 2026-05-23 |
| 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 |
| embed | success | — | — | — | 1 | 2026-06-02 |
| 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 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified.
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- Applied Guidance: countermeasure evaluation