The purpose of this report is to provide the Federal Motor Carrier Safety Administration (FMCSA) with an analysis on how existing weather conditions may affect the safe operation of commercial motor vehicles (CMVs) on our Nation's highways. Further, it also looks at the general impacts projected by climate change studies and hypothesizes how possible changes in weather patterns and extreme storms could affect CMV operations in the future. This includes climate changes that increase the potential of weather-related CMV crashes and those that may impact trucking industry practices to require a response in FMCSA regulatory enforcement.