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.RTA agrees to reimburse the Contractor up to the sum specified on page 1 that shall constitute full and complete compensation for the Contractor's services. Pima County needs your input and ideas to develop a transportation plan for the future. It's the letter from FMCSA with the date your authority went active and what authority was granted. Trucking company when the Mode of Transportation is reported as Truck. The Department's Concealed Weapons Permit Unit (CWPU) is responsible for issuing concealed carry permits to qualified individuals. Carriers that include printed legible driver's name and trucking company name. 19. There are more than 400 MPOs in the United States. There are eight MPOs in Arizona.