1991 Annual Report: Restraint System Use in 19 U.S. Cities

Datta, Tapan K.; Guzek, Paul · 1992 · ROSA P / National Highway Traffic Safety Administration

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Summary

This report presents the findings of a 1991 observational study sponsored by the National Highway Traffic Safety Administration (NHTSA) to monitor occupant restraint system use and motorcycle helmet compliance in 19 U.S. cities. Conducted by Goodell-Grivas, Inc., the study aimed to establish trends in safety behavior across diverse geographic and demographic regions. The research design involved four distinct observational components: driver and front-outboard passenger shoulder belt use at roadway intersections and freeway exits; passenger restraint use at shopping centers; toddler safety seat installation correctness; and motorcycle/moped helmet use. Data were collected continuously throughout 1991, resulting in 256,907 driver observations, 85,105 passenger observations, 3,606 toddler seat inspections, and over 11,000 motorcycle/moped observations. The primary finding was an overall driver safety belt use rate of 51.1%, an increase from previous years. Use rates varied significantly by gender, age, and legal environment. Female drivers exhibited higher compliance (59.0%) than males (45.6%), and drivers aged 50 or older had the highest usage rates. In cities with mandatory use laws, driver belt use was 53.7%, compared to 36.3% in cities without such laws. Front-outboard passenger use was lower, at 44.8%. Among passengers observed at shopping centers, restraint rates declined with age: 70.2% for infants, 73.6% for toddlers, 41.8% for subteens, 22.9% for teens, and 40.5% for adults. Child safety seats were used for 87.0% of infants and 81.8% of toddlers, with 85.9% of toddler seats correctly installed. However, misuse of shoulder belts occurred in 2.6% of restrained drivers, with higher misuse rates among females and drivers of domestic vehicles. The study also evaluated passive restraint systems and motorcycle safety. Vehicles equipped with automatic belt systems showed an 80.1% driver use rate, with motorized systems reaching 96.6% compliance. Motorcycle helmet use was 58.0% for operators and 48.0% for passengers overall. Compliance was drastically higher in jurisdictions with mandatory helmet laws (99.5% for operators) compared to those without (39.6%). The report concludes that mandatory laws and automatic restraint systems significantly improve compliance, while demographic factors such as gender, age, and vehicle origin influence usage patterns. These findings provide critical baseline data for evaluating the effectiveness of safety regulations and engineering interventions in reducing traffic injuries.

Key finding

Driver safety belt use was 51.1 percent overall, reaching 60.9 percent for females and 47.6 percent for males in areas with mandatory use laws, while motorcycle helmet use for operators was 99.5 percent in mandatory law areas versus 39.6 percent in non-mandatory areas.

Methodology

naturalistic

Sample size: 256907

Provenance

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

Topics

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• seat belt use
• child passenger safety

Information type

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• Empirical Findings: observational prevalence