The Federal Motor Carrier Safety Administration (FMCSA) uses SafeStat results to identify and prioritize carriers for on-site Compliance Reviews, at which time the supporting data such as number of power units and vehicle miles traveled are verified and the carrier's safety status is confirmed. Other SafeStat users should take careful note of the following:

Most data used by SafeStat are maintained in the Motor Carrier Management Information System (MCMIS), the FMCSA central database of all motor carriers with a U.S. DOT number. While the event data (such as roadside inspection and Compliance Review results and moving violations and crashes) are updated continuously, some normalizing data (e.g., number of power units) may not be up to date, particularly if the motor carrier has not recently had a Compliance Review or submitted an updated form MCS-150. This is especially true for the power unit information used to calculate the Accident Involvement Measure (AIM) and Accident Safety Evaluation Area (Accident SEA) value. Inaccurate or out-of-date normalizing data in MCMIS can result in SafeStat results that do not accurately reflect the motor carrier's safety status. Prudent users will verify the accuracy of the data prior to use and motor carriers should examine and correct their own data by filing an updated form MCS-150  (US DOT number Application option) with FMCSA.