Seat belt and shoulder strap use among urban travelers : a comparison of survey results from 1974, 1975, and 1976.

Stoke, Charles B · 1977 · ROSA P / Virginia Transportation Research Council (VTRC)

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Summary

This study, conducted by Charles B. Stoke for the Virginia Highway and Transportation Research Council, investigates seat belt and shoulder strap usage among urban travelers in Virginia. The research was motivated by the need to determine the actual extent of restraint use, as observational data typically reveals lower compliance than self-reported surveys. The primary objectives were to quantify usage rates across different demographic and vehicle categories and to identify changes in behavior over a three-year period. The methodology involved observational surveys conducted in late January 1974, February 1975, and February 1976. Data collectors stationed at signalized intersections in four major metropolitan areas (Western, Northern, Central, and Eastern Virginia) observed motorists in the lane adjacent to the curb. Observers displayed a clipboard asking if occupants were wearing seat belts, then visually verified the response, recording the type of restraint used (lap only, lap and shoulder, or none), occupant sex and age, seat position, and vehicle age. The sample sizes were 3,440 vehicles in 1974, 6,150 in 1975, and 4,495 in 1976. The results indicated that overall seat belt usage peaked in 1975 and declined significantly in 1976. In 1974, 21.5% of all occupants used restraints; this rose to 24.5% in 1975 before falling to 15.3% in 1976. Driver usage followed a similar trend, increasing from 24.0% in 1974 to 27.5% in 1975, then dropping to 18.3% in 1976. A strong association was found between driver and right-front passenger behavior; when drivers did not use belts, over 96% of right-front passengers also did not use them. Conversely, when drivers used lap and shoulder belts, approximately 74–84% of right-front passengers did the same. Usage rates were consistently higher for female occupants, drivers, and occupants of newer vehicles (post-1971). In 1976, usage was lowest in the Western Virginia region and highest in the Northern region. The study concludes that while there was a temporary increase in compliance in 1975, usage rates dropped sharply in 1976 across nearly all demographic and geographic categories. The high correlation between driver and passenger restraint use suggests that driver behavior significantly influences passenger compliance. These findings were intended to assist the Virginia Highway Safety Division in programming and planning efforts to increase belt use, highlighting the need for continued intervention given the declining trends observed in the final survey year.

Key finding

Seat belt usage peaked at 24.5% in 1975 and declined to 15.3% in 1976, with a strong positive association between driver and right-front passenger restraint use.

Methodology

naturalistic

Sample size: 14085

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