Effectiveness of Oregon’s teen licensing program : final report.
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Summary
This report evaluates the effectiveness of Oregon’s Graduated Driver Licensing (GDL) program, which was implemented in March 2000 to reduce fatal and injury crashes among teen drivers. The study synthesizes findings from two major external evaluations: a National Highway Traffic Safety Administration (NHTSA)-supported study by the Center for Applied Research, Inc. (CAR), and an American Automobile Association (AAA)-financed study by the Traffic Injury Research Foundation (TIRF). The Oregon Department of Transportation (ODOT) conducted this synthesis to identify which program elements offer the most crash reduction benefits and to determine if the program should continue. The methodology involved a comprehensive review of driver records, surveys, and focus groups conducted by the original research organizations. The ODOT Technical Advisory Committee analyzed these results to verify if the data supported the conclusions drawn in the source reports. The analysis compared crash involvement rates before and after the GDL implementation, utilizing licensed driver data as a proxy for exposure, though vehicle miles traveled data was unavailable. The report also examined specific program components, including passenger restrictions, nighttime driving bans, supervised driving requirements, and driver education impacts. Key findings indicate that Oregon’s GDL program has yielded significant safety benefits. The number of 16-year-old drivers involved in fatal and injury crashes declined dramatically, dropping from 1,195 in 1998 to 658 in 2006. The crash involvement rate for 16-year-olds decreased by over 25% between 1999 and 2004, a decline more than twice that of the general driving population. Additionally, the program appears to have delayed licensure, as the number of licensed teenagers decreased by 9.2% during the same period while the teenage population increased. Specific program elements showed distinct effects: nighttime driving restrictions were associated with fewer late-night collisions compared to jurisdictions without such bans, and teens with traffic citations had nearly four times the odds of crash involvement compared to those without citations. However, the report notes that crash-involved teens often reported more driving practice than crash-free teens, suggesting that the quality or context of practice may matter more than quantity. The report concludes that the GDL program should be continued due to its demonstrated safety benefits. It recommends strengthening early intervention measures, such as stricter responses to traffic violations, to prevent novice drivers from progressing to collisions. While passenger and nighttime restrictions showed positive correlations with reduced crashes, the authors caution that further analysis is needed to fully isolate their impact from other factors. The study underscores the critical role of parental involvement and suggests that driver education contributes to safer driving attitudes, though its direct impact on crash rates requires more nuanced evaluation.
Key finding
The fatal and injury crash involvement rate for 16-year-old drivers in Oregon declined by 25.3% between 1999 and 2004, a reduction more than twice the decline observed for all drivers.
Methodology
dataset
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.
Topics
Ranked by relevance to this paper. Hover a topic for its definition.
- graduated licensing
- licensing policy
- driver education effectiveness
- parental management
- learner drivers
- novice drivers
Information type
What kind of knowledge this paper contributes, grouped by family — independent of topic (what it is about) and method (how it was studied).
- Applied Guidance: policy recommendations, countermeasure evaluation
- Empirical Findings: observational prevalence