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.Applying for trucking authority gives your company permission from the US government to receive payment for hauling freight as an independent company. We will find out what paperwork and registration is necessary for opening a trucking business in your state. You'll need to secure liability and cargo insurance that meets FMCSA requirements. You'll need to fill out a BOC3 form with this designation. How To Get Your MC Authority. With your business established and all the initial pieces in place, carriers and brokers can then fill out an FMCSA registration form for their MC authority. We help make the process easy with our years of expertise in the trucking business. If you are opening a trucking business, you must fill out plenty of paperwork and pay fees before beginning operations.