Driver Electronic Device Use in 2008
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Summary
This research note, published by the National Highway Traffic Safety Administration (NHTSA) in 2009, analyzes driver electronic device usage in the United States based on data from the 2008 National Occupant Protection Use Survey (NOPUS). The study addresses the growing concern regarding distracted driving by providing the only nationwide, probability-based observational data on this behavior. The primary objective was to quantify the prevalence of hand-held cell phone use, visible headset use, and the manipulation of other hand-held electronic devices among drivers during daylight hours. The methodology relied on roadside observations conducted by trained observers at probabilistically sampled intersections controlled by stop signs or stoplights. Data collection occurred between June 2 and June 22, 2008, observing 55,199 vehicles across 1,504 sites. Observers recorded behaviors of drivers and passengers in stopped vehicles between 7 a.m. and 6 p.m. without interviewing occupants, ensuring the capture of untainted behavior. The survey categorized usage into three distinct metrics: holding a phone to the ear, speaking with a visible headset, and visibly manipulating hand-held devices (such as texting or using PDAs). Statistical analysis included confidence levels for differences between demographic groups and year-over-year changes from 2007 to 2008. The findings indicate that in 2008, 6% of drivers were using hand-held cell phones, translating to an estimated 812,000 vehicles driven by someone using a hand-held phone at any given daylight moment. When including hands-free usage, estimated at 5% based on prior survey ratios, approximately 11% of drivers were using some form of phone. Visible headset use remained low at 0.6%, while the percentage of drivers visibly manipulating hand-held devices rose to 1%. Significant demographic variations were observed: hand-held phone use was highest among drivers aged 16–24 (12%) and lowest among those aged 70 and older (1%). Regionally, hand-held phone use increased in the Western United States from 6% in 2007 to 7% in 2008, and the manipulation of hand-held devices in the West significantly increased from 0.6% to 2.1%. No statistically significant changes were found in overall hand-held phone use between 2007 and 2008. The significance of this report lies in its provision of rigorous, observational data to inform traffic safety policy. At the time of publication, only six states and the District of Columbia had jurisdiction-wide bans on hand-held cell phone use, while text messaging bans existed in 13 states. The NHTSA emphasizes that driving requires full attention and that cell phone use poses a risk to safety. The study highlights that while hand-held phone use is prevalent, particularly among younger drivers, the use of other electronic devices is also emerging as a notable distraction. The data serves as a critical baseline for evaluating the effectiveness of existing and future legislative restrictions on driver electronic device use.
Key finding
In 2008, 6 percent of drivers were observed using hand-held cell phones, while 1 percent were visibly manipulating hand-held devices.
Methodology
naturalistic
Sample size: 55199
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 | partial | — | — | — | 2 | 2026-06-10 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified_with_issues.
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Information type
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- Empirical Findings: observational prevalence, behavioral performance data
- Methodological Resource: dataset resource