Ala. Code § 40-12-171

Each person transferring freight, not including household goods, using more than one vehicle for hire in cities or towns or in the police jurisdiction thereof shall pay a license tax of $10 for each vehicle in excess of one. This section shall not apply to vehicles owned by motor carriers coming within the provisions of Sections 37-3-1 through 37-3-34 and 40-19-1 through 40-19-17 nor shall it apply to vehicles owned by any railroad company or express company.