2011 National Survey of Speeding Attitudes and Behaviors [Traffic Tech]
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Summary
The 2011 National Survey of Speeding Attitudes and Behaviors (NSSAB), conducted by the National Highway Traffic Safety Administration (NHTSA), aims to enhance the understanding of driving behavior to inform the development of countermeasures and interventions for speeding reduction. As the third in a series of such surveys, this study provides national estimates of speeding behaviors and attitudes in the United States. A key methodological advancement in this iteration was the development of a driver typology based on responses to six speeding behavior questions. Using cluster analysis, researchers identified three distinct driver groups: nonspeeders (30%), sometime speeders (40%), and speeders (30%). This classification served as a powerful predictor for norms, attitudes, sanction experiences, and crash history. The study reveals significant demographic and behavioral differences among the three groups. Speeders were predominantly male, younger, and had higher household incomes compared to nonspeeders. For instance, half of drivers aged 16–20 were classified as speeders, compared to only 15% of those aged 65 or older. Speeders also exhibited more risky behaviors, including higher rates of driving without seat belts, driving after drinking, and using cell phones or texting while driving. In terms of attitudes, speeders were less likely to agree that everyone should obey speed limits and more likely to express impatience with slower drivers or a preference for driving fast. They were also more likely to believe that speeding is not dangerous for skilled drivers. Regarding countermeasures, drivers generally favored non-punitive measures such as electronic warning signs (89%) and public awareness campaigns (88%). Support for mandatory speed governors was high for specific groups, such as drivers with multiple tickets (82%) and those under 18 (77%), but low for all drivers (24%). Automated speed enforcement via cameras was viewed favorably in specific contexts like school zones (86%) and crash-prone areas (84%), though only 35% supported their use on all roads. Notably, speeders were more likely to view speed cameras as revenue generators rather than safety tools. Furthermore, while speeders were twice as likely to be stopped by police compared to nonspeeders, they were the least likely to change their behavior following a ticket or warning. The findings indicate that speeders are more resistant to conventional interventions and have higher rates of speeding-related crashes and injuries. Conversely, the "sometime speeders" group, comprising nearly 40% of drivers, appears more amenable to countermeasures. The study concludes that targeting this middle group offers significant potential for reducing the overall prevalence of speeding, as they represent a larger and more responsive population than the entrenched speeders or compliant nonspeeders.
Key finding
Cluster analysis classified 30 percent of drivers as nonspeeders, 40 percent as sometime speeders, and 30 percent as speeders, with speeders far more likely to be stopped for speeding (20 percent versus 4 percent of nonspeeders) yet least likely to change their behavior afterward.
Methodology
survey
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 (7 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 | — | — | — | 3 | 2026-06-10 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified.
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- Empirical Findings: observational prevalence