The Federal Motor Carrier Safety Administration holds motor carriers and drivers responsible for meeting safety standards and regulations. Carriers can find their data stored on FMCSA’s Safety Measurement System (SMS), which they use to track the number, severity, and date of safety violations, as well as crash and inspection data. Data is derived from unsafe driving, crash indicator, Hours of Service (HOS) compliance, vehicle maintenance, controlled substances/alcohol, hazardous materials compliance, and driver fitness. The FMCSA makes available a compliance manual to help companies operating CMVs comply. The FMCSA Compliance Manual can be downloaded here.