NAFTA Safety Stats present information and statistics on the U.S. operations of all U.S. registered interstate and intrastate motor carriers by national domicile of the carrier. The data and information are presented based on the carrier's domicile within each of the three North American Free Trade Agreement (NAFTA) nations - the United State, Canada, and Mexico.

FMCSA operates and maintains MCMIS. MCMIS contains information on the safety fitness of commercial motor carriers and hazardous material (HM) shippers subject to the Federal Motor Carrier Safety Regulations (FMCSRs) and the Hazardous Materials Regulations (HMRs). MCMIS is a collection of safety information including state-reported crashes, compliance reviews and roadside inspection results, enforcement data, and motor carrier census data.

• The MCMIS Inspection data contain information captured at a Roadside Inspection (RI). These data include the type of inspection conducted (inspection level), the number of driver and vehicle violations, Out of Service (OOS) violations resulting from RIs, and domicile information. The inspection also provides the vehicle size and identification, driver information, and the date and location of the inspection.
  
  NAFTA Safety Stats Inspection data are derived from a September 26, 2008 MCMIS data snapshot.
   
• The MCMIS Compliance Review data include carrier performance and compliance data regarding FMCSRs and HMRs, which are captured during an on-site compliance review (CR). CR data contain domicile information, number of drivers and power units, carrier safety ratings, number of recordable crashes, and the number and types of violations of acute, critical, and other regulations discovered during a CR. For years 2003 to 2006, domicile information is derived from the compliance review safety event data. Compliance review data for 2002 is based on compliance reviews conducted on interstate and HM intrastate motor carriers with an active U.S. DOT number.
  
  
  NAFTA Safety Stats Compliance Review data are derived from a September 26, 2008 MCMIS data snapshot.
   
• The MCMIS Crash data include crashes that are reported by states to the FMCSA through the SAFETYNET electronic reporting system. The Crash File includes the National Governors' Association (NGA) recommended data elements collected on trucks and buses involved in crashes that meet the NGA recommended crash threshold. An NGA eligible crash must involve a truck (a vehicle designed, used, or maintained primarily for carrying property, with a gross vehicle weight rating or gross combination weight rating of more than 10,000 lbs.) or bus (a vehicle with seats for at least nine people, including the driver). The crash must result in at least one fatality; one injury where the person injured is taken to a medical facility for immediate medical attention; or one vehicle having been towed from the scene as a result of disabling damage suffered in the crash. Domicile information for vehicles in these crash statistics is based on the crash safety event data recorded at the time of the crash.
  
  NAFTA Safety Stats Crash data are derived from a September 26, 2008 MCMIS data snapshot.
   
• The MCMIS Census data* contain records for several hundred thousand active entities, i.e., motor carriers, hazardous materials shippers, and registrants (entities that register vehicles but are not carriers). The census data provide descriptive data on the carrier such as the number of drivers and power units, carrier location, operation type and cargo types transported by the entity. In order to identify each entity, MCMIS assigns a unique number to each entity record, which is referred to as the record census number. This is also the number supplied to an entity as their USDOT number. NAFTA Safety Stats uses the multi year snapshots of the Census file data to check whether an interstate or HM intrastate motor carrier is active with a U.S. DOT number.
  
  The MCMIS Census snapshot dates currently used are:
  

  December 23, 2004

  December 23, 2005

  December 22, 2006

  December 21, 2007

  September 26, 2008

  
  *NOTE: NAFTA Safety Stats Crash data does not rely on the Fatality Analysis Reporting System (FARS) because the FARS database does not record carrier domicile information.

Passenger Carriers listed are active in both MCMIS and Licensing and Insurance (L&I) databases as of September 26, 2008.

Additionally, NAFTA Safety Stats uses border data from the U.S. Department of Transportation, Bureau of Transportation Statistics (BTS). Border crossing data are collected by the U.S. Department of Homeland Security, Customs and Border Protection, and provided to BTS on a monthly basis. Border trade data are collected by the U.S. Department of Commerce, Census Bureau, and provided to BTS on a monthly basis.