摘要: |
Within this research, the study team analyzed the Motor Carrier Management Information System (MCMIS) database to develop estimates of the increased risk of crash involvement experienced by commercial drivers who change jobs frequently, conducted a literature review, and contacted industry experts to identify strategies with the best potential to improve trucking companies' retention of safe drivers. The database analyses quantified the risk of single - and multiple -crash involvement as a function of annual job change rate, and expressed the relative risk for drivers with more versus fewer job changes through calculation of the 'odds ratio' statistic. Significant odds ratio values were found, indicating that crash risk begins to rise when a driver has averaged more than two jobs with different employers each year for two years or longer, and that the odds of being involved in multiple crashes more than doubles for drivers with three or more jobs per year during this same interval. The literature review coupled with contacts with drivers, motor carrier management, motor carrier insurers, and other groups and associations supported recommendations in the areas of selection and hiring of new driver applicants; new driver orientation; driver train ing, including refresher training; driver-dispatcher operations; the measurement and recognition of safe driving performance by trucking companies; scheduling and hours-of-service compliance; and the needs of industry to improve perceptions of the profession and to convey respect for and a commitment to its drivers. |