Safety belt and motorcycle helmet use in Virginia : the Summer 2007 update.

Kennedy, Jami L; Lynn, Cheryl · 2007 · ROSA P / Virginia Transportation Research Council (VTRC)

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Summary

This report presents the findings of the Summer 2007 statewide survey on safety belt and motorcycle helmet use in Virginia, conducted by the Virginia Transportation Research Council (VTRC) for the Virginia Department of Motor Vehicles. The study aims to track the effectiveness of programmatic efforts to increase restraint usage and to provide data required by the National Highway Traffic Safety Administration (NHTSA) for federal incentive grant allocations. The survey adheres to NHTSA protocols established in 1992, which mandate probability-based sampling and direct observational data collection to ensure accuracy and representativeness. The methodology employed a stratified random sampling design across 140 sites, selected to reflect the proportion of Virginia’s urban and rural populations. Jurisdictions comprising less than 15 percent of the state’s total population were excluded from the sampling frame. Data collectors observed traffic at these sites for one hour each, recording shoulder belt use for drivers and right-front passengers in passenger motor vehicles (cars, trucks, vans, minivans, and SUVs) and helmet use for motorcycle drivers and passengers. Observations were weighted by the number of travel lanes to account for multilane highways, and statistical formulas were used to calculate statewide use rates and relative errors. The survey period ran from early to mid-June 2007, covering all days of the week and daylight hours. The results indicate that Virginia’s safety belt use rate for passenger vehicle occupants was 79.9 percent in Summer 2007, based on 20,657 weighted observations. This represents a slight increase from the 78.7 percent rate recorded in 2006 but is 0.5 percent lower than the peak rate of 80.4 percent achieved in Summer 2005. The relative error for this estimate was 0.73 percent. Motorcycle helmet use remained exceptionally high at 96.1 percent, based on 387 observations, with a relative error of 0.49 percent. Historical data from 1992 to 2007 show that helmet use has consistently been near universal, while safety belt use has fluctuated between a low of 67.1 percent in 1997 and the 2005 high. The authors conclude that while the 2007 safety belt rate shows a marginal improvement over the previous year, annual variations in use rates may be attributable to extraneous variables such as changes in travel patterns or gas prices rather than solely to changes in driver behavior or the efficacy of safety campaigns. The report underscores the continued high compliance with helmet laws and the persistent challenge of achieving higher safety belt usage rates despite mandatory laws and federal incentive programs. These findings serve as a baseline for evaluating future safety initiatives and determining eligibility for federal funding tied to restraint use improvements.

Key finding

Virginia's summer 2007 safety belt use rate was 79.9 percent and motorcycle helmet use rate was 96.1 percent.

Methodology

on_road

Sample size: 21044

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
• incidence prevalence

Information type

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• Empirical Findings: observational prevalence, crash risk outcomes