United States Department of Transportation
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Pilot Tests of a Seat Belt Gearshift Delay on the Belt Use of Commercial Fleet Drivers
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2009-12-01
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[PDF-1.37 MB]
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Abstract:the seat belt was buckled. Participants, commercial drivers from the United States and Canada who did not consistently wear their seat belts, could avoid the delay by fastening their seat belts. Unbelted participants experienced a delay of either a constant 8 seconds or a variable delay that lasted an average of 8 seconds. United States drivers’ belt use increased from 47% to 68% (a 45% increase), and Canadian drivers’ use rose from 54% to 75% (a 39% increase). The fixed delay was more effective for U. S. drivers than a variable delay, but there was no difference between these two delay schedules for Canadian drivers.
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