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Use of automatic safety belts in Michigan

In: Journal of Safety Research, Vol. 22, No. 3, Fall 1991, p. 141-146; DOI: 10.1016/0022-4375(91)90004-F

Authors: Frederick M. Streff, Lisa J. Molnar

The use of automatic safety belts among motorists throughout the state of Michigan was examined in May 1990 as part of a broader direct-observation survey to measure compliance with Michigan's mandatory safety belt use law. Use of the two most common types of automatic belt systems were measured: the nonmotorized detachable three-point lap and shoulder belt system and the motorized shoulder belt with manual lap belt system. A total of 828 drivers and 237 front-right passengers were observed with automatic belt systems between April 30, 1990 and May 24, 1990. Use of nonmotorized detachable three-point lap and shoulder belt systems was 74.3%. Lap belt use of motorized shoulder and manual lap belt systems was 79.2%. Of all motorized shoulder belt and manual lap belt systems observed, 97.4% had the shoulder belts connected.