Mo. Rev. Stat. § 622.604

Except as otherwise provided in section 390.030, no person shall engage in the business of transporting property, except household goods, by motor vehicle for hire or compensation in intrastate commerce on any public highway in this state, unless there is in force with respect to that person a property carrier registration issued by the division pursuant to the provisions of sections 622.600 to 622.620, which authorizes such transportation.