DOT HS 811 413

Tech Report

Maryland

Final report.

United States. National Highway Traffic Safety Administration

NTL-LAWS AND REGULATIONS-Federal Laws ; NTL-LAWS AND REGULATIONS-State Laws and Regulations ; NTL-OPERATIONS AND TRAFFIC CONTROLS-OPERATIONS AND TRAFFIC CONTROLS ; NTL-PLANNING AND POLICY-PLANNING AND POLICY ; NTL-SAFETY AND SECURITY-SAFETY AND SECURITY ; NTL-SAFETY AND SECURITY-Human Factors ; NTL-SAFETY AND SECURITY-Accidents ;

The main objectives of this study were to determine the relationships between seat belt use in the States and (1) the

type of seat belt law enforcement (primary versus secondary), and (2) seat belt fine levels.

The study examined law type and levels of fines as predictors of seat belt use for two time periods (1997 to 2002

and 2003 to 2008) using panel regression analyses. Two outcome measures were examined: seat belt use among

front-seat occupants over age 8 killed in passenger vehicle crashes from the Fatality Analysis Reporting System

(FARS) and the observed statewide seat belt use of front-seat occupants in passenger vehicles.

The results indicated that primary law upgrades were associated with 9- to 10-percentage-point increases in FARS

use and 10- to 12-percentage-point increases in observed seat belt use. By comparison, increasing a State’s fine

amount from $25 (the current median value) to $60 was associated with a nearly 4-percentage-point increase in both

FARS and observed seat belt use. Alternatively, increasing the fine amount from $25 to $100 was associated with a

nearly 7-point increase in use.

PDF

DTNH22-05-D-25043

NHTSA - Behavioral Safety Research