Passenger vehicle driver cell phone use : results from the fall 2000 National Occupant Protection Use Survey

Utter, Dennis · 2001 · ROSA P / United States. Department of Transportation. National Highway Traffic Safety Administration

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Summary

This research note by Dennis Utter (2001) addresses the growing concern of driver distraction, specifically focusing on the prevalence of cell phone use while driving. Motivated by prior studies indicating that driver distraction contributes to 20–30% of all crashes and 11% of fatal crashes, the study aims to quantify actual cell phone usage rates. While self-reported surveys suggested high usage, they could not determine how many drivers were actively using phones at any given moment. To address this gap, the National Highway Traffic Safety Administration (NHTSA) expanded its National Occupant Protection Use Survey (NOPUS) protocols to include direct observation of hand-held cell phone use. The study utilized data from the Fall 2000 NOPUS Controlled Intersection Study, a multi-stage probability sample designed to represent national occupant protection use. Observers stationed at 640 controlled intersections (stop signs or lights) across 50 primary sampling units recorded data for 45 minutes per site during daylight hours (8 a.m. to 6 p.m.). The sample included passenger cars, vans, sport utility vehicles (SUVs), and pickup trucks, excluding commercial and emergency vehicles. Observers recorded whether drivers were using hand-held cell phones, along with demographic variables such as sex, age, race, vehicle type, geographic region, time of day, and area type (urban, suburban, rural). The results indicate that nationally, 3.0% of passenger vehicle drivers were observed using hand-held cell phones at any given time. When extrapolated to include estimated hands-free usage, the total active cell phone use rate rises to 3.9%, translating to approximately 600,000 drivers using phones during any daylight hour. Usage rates varied significantly by vehicle type, with vans and SUVs showing the highest rates (4.8%) and pickups the lowest (1.9%). Use was higher on weekdays than weekends and nearly twice as high during non-rush hours compared to rush hours. Geographically, use was highest in the Midwest, South, and West. Demographic analysis revealed that female drivers, particularly those driving vans and SUVs, used cell phones more frequently than males. Usage was also higher among White drivers compared to Black or other racial groups, and significantly lower among senior drivers compared to young adults and adults. The significance of these findings lies in providing the first national observational estimates of driver cell phone use, offering concrete data for policymakers considering restrictions on mobile device use while driving. The study highlights that while overall prevalence is low at any single moment, the absolute number of distracted drivers is substantial. The variation in usage by vehicle type, time, and demographics suggests that distraction risks are not uniform, potentially informing targeted safety interventions and legislative efforts to mitigate crash risks associated with inattention.

Key finding

National estimates indicate that 3 percent of passenger vehicle drivers were actively using hand-held cell phones during daylight hours, with usage rates highest among van and SUV drivers and during non-rush hours.

Methodology

naturalistic

Sample size: 640

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).

Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified_with_issues.

Topics

Ranked by relevance to this paper. Hover a topic for its definition.

• mobile phones
• incidence prevalence
• distraction laws
• exposure measurement
• seat belt use

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
• Empirical Findings: observational prevalence
• Methodological Resource: dataset resource