FMCSA operating authority is often identified as an "MC," "FF," or "MX" number, depending on the type of authority that is granted. Apply for your trucking authority.These permits are good for one year but are renewable. It is the applicant's responsibility to provide the agent with all documents, including the Form MV-32. The application process for adults, 18 years of age and older, is provided on the Welcome. Letter in the "MATP Application Packet for Adults.