49 CFR 392 discusses requirements, such as those related to illness and fatigue, drug and alcohol use, and seat belt use, for anyone driving a commercial motor vehicle (CMV). It also identifies requirements that apply to carriers, brokers, and other parties in the logistics chain. Every CMV must be operated within the laws and regulations of its current jurisdiction. However, if FMCSA imposes a higher standard than that of the jurisdiction, the FMCSA rule must be obeyed.
FMCSA has instituted coercion rules intended to prevent motor carriers from influencing drivers to violate safety regulations. Only the driver can determine if he or she is too ill or tired to safely operate a vehicle, or if the road conditions pose too great a safety hazard to drive. See the coercion rule in 49 CFR 390.5T and 49 CFR 390.6 for further detail.