Commercial trucks are heavily regulated because their size and weight make crashes far more likely to cause catastrophic injuries. In interstate commerce, most trucking safety rules come from the Federal Motor Carrier Safety Regulations (FMCSRs), enforced by the Federal Motor Carrier Safety Administration (FMCSA). These rules govern driver qualifications, hours of service, vehicle inspections and maintenance, cargo securement, and required equipment.
Truck Accident Attorney Network has researched all the relevant information here, and cited all up to date sources at the end of this article.
Federal and State Truck Safety Rules
Commercial motor vehicles operating across state lines are generally subject to the FMCSRs. States often adopt similar standards for intrastate trucking, but the exact state rules can vary. For interstate carriers, the federal framework is the starting point for compliance and often the benchmark used in litigation after a serious truck crash.
Commercial Driver Qualification Requirements
Motor carriers must ensure their drivers are properly qualified before putting them behind the wheel of a commercial truck. That usually means the driver must hold the proper Commercial Driver’s License (CDL) for the vehicle and cargo involved, meet medical qualification standards, and satisfy the carrier’s driver-qualification and background-check requirements. Carriers must also review motor vehicle records and comply with federal rules concerning drug and alcohol history inquiries and Clearinghouse queries. (CSA Compliance Safety Accountability)
Medical certification rules changed significantly in 2025. Under FMCSA’s National Registry II implementation, medical examiners electronically transmit examination results for CDL and CLP drivers to state driver licensing agencies. Because of that change, the older advice that drivers should simply keep paper medical records in the truck is no longer accurate as a general rule, although FMCSA has issued temporary guidance and waivers during implementation. (FMCSA)
Hours-of-Service Rules and Driver Fatigue
Fatigue remains one of the most important truck-safety issues, so FMCSA strictly limits how long many property-carrying drivers may work and drive. In general, a property-carrying driver may drive up to 11 hours only after 10 consecutive hours off duty, may not drive beyond the 14th consecutive hour after coming on duty, and must take a 30-minute break after 8 cumulative hours of driving time if continuing to drive. There is also a weekly cap of 60 hours in 7 days or 70 hours in 8 days, depending on the carrier’s schedule. (FMCSA)
For many drivers, these hours must be tracked with an electronic logging device rather than a traditional paper logbook. Paper logs are still permitted in limited circumstances, including certain exceptions such as some short-haul operations or drivers who only occasionally need records of duty status. (FMCSA)
Inspection, Repair, and Maintenance Duties
Trucking companies must systematically inspect, repair, and maintain their vehicles. In addition to ongoing maintenance duties, every commercial motor vehicle must undergo a periodic inspection at least once every 12 months, and those inspections must cover the items listed in the federal minimum periodic inspection standards. A truck that is not properly maintained can create serious hazards involving brakes, tires, lights, steering, suspension, coupling devices, and other essential systems. (CSA Compliance Safety Accountability)
Required Safety Equipment
Federal rules also require commercial vehicles to carry or maintain specific safety equipment, depending on the vehicle and operation. Common examples include properly functioning lamps and reflective devices, brake systems, tires, mirrors, windshield equipment, and emergency equipment. Many trailers and semitrailers must also have rear impact guards designed to reduce underride crashes, and federal standards for rear impact protection have been strengthened in recent years. (CSA Compliance Safety Accountability)
Cargo Securement Requirements
Cargo must be loaded and secured so it does not shift, roll, fall, or otherwise become unstable in transit. FMCSA cargo securement rules require cargo to be firmly immobilized or secured using adequate structures or devices such as tiedowns, dunnage, shoring bars, or other appropriate restraints. Articles likely to roll must be restrained by chocks, wedges, a cradle, or equivalent means. Special cargo categories, including hazardous materials and certain oversized or specialized loads, may trigger additional requirements, permits, or training obligations. (FMCSA)
Why These Standards Matter in Truck Accident Cases
When a truck crash happens, safety-rule violations can become central evidence. Hours-of-service violations, missing qualification records, inadequate maintenance, defective rear-impact guards, or improperly secured cargo may all help show negligence by a driver, motor carrier, maintenance provider, shipper, or another responsible party. For that reason, current FMCSA compliance records often play a major role in truck accident investigation and litigation. You can find a truck accident lawyer nationwide using our website if you have been injured in a serious tractor trailer crash.
Additional Sources
- Federal Motor Carrier Safety Administration hours-of-service summary and current HOS guidance. (FMCSA)
- FMCSA electronic logging device compliance and exemptions guidance. (FMCSA)
- FMCSA medical certification guidance and National Registry II materials. (FMCSA)
- FMCSA Safety Planner materials on driver qualification, equipment, inspections, and rear-end protection. (CSA Compliance Safety Accountability)
- FMCSA cargo securement rules and 49 CFR cargo securement provisions. (FMCSA)
- NHTSA and Federal Register materials on updated rear impact guard standards. (Department of Transportation)
