Commercial Motor Vehicle (CMV) Driver Restart Study: Final Report

Michael Trentalange, Devon Moeller, Susan Soccolich, Rebecca Hammond, Kevin Kan, David Maislin, Jeffrey Hickman, Daniel Mollicone, Richard Hanowski, Greg Maislin, David Dinges, Lytx (Firm) (+4 others)
FOREWORD The Federal Motor Carrier Safety Administration (FMCSA) awarded a contract to conduct a naturalistic study of the operational, safety, health, and fatigue impacts of the two restart provisions (i.e., the requirement for two nighttime periods [1-5 a.m.] during a 34-hour restart, and the requirement for a minimum of 168 hours between the beginning of a 34-hour restart period and the beginning of the previous 34-hour restart period-see Sections 395.3(c) and 395.3(d) of Title 49, Code of
more » ... deral Regulations) on commercial motor vehicle (CMV) drivers. This naturalistic study included a sample of drivers large enough to produce statistically significant results. The study compared the effects of different recovery times using both an insubject and between-subject research design. It was expected that the two groups of drivers operating under the two restart conditions would overlap, and consequently a paired study design was used to take advantage of its statistical power. This report documents the methods, data analyses, results, and conclusions involved in successfully conducting this study and evaluating the data.
doi:10.21949/1502650 fatcat:2udsu4wcxvcohldh77brcwwlue