Do owner-operators pose a safety risk on the nation's highways?

Despite persistent claims in the motor carrier industry of poorer safety performance of owner-operators, there is little empirical work directly comparing owner-operator safety performance to that of employee drivers. This study assesses the statistical significance of differences in the safety performance between owner-operators and employee drivers. This study also expands on previous driver focused safety models by examining how driver and carrier characteristics affect safety performance. Data for this study were derived from the Motor Carrier Management Information System (MCMIS), and the Commercial Driver's License Information System (CDLIS) databases. Study results provide evidence that owner-operators are associated with more driver- and vehicle-out-of-service violations but experience lower crash rates than do employee drivers. (C) 2013 Elsevier Ltd. All rights reserved.