The commission shall have power and authority to require a common carrier by motor vehicle, railroad, express, air, or water to establish reasonable through rates with other common carriers by motor vehicle, railroad, express, air, or water and to provide safe and adequate service, equipment, and facilities for the transportation of passengers and property; to establish and enforce just and reasonable individual and joint rates, charges, and classifications, and just and reasonable regulations and practices relating thereto; and in case of such joint rates, fares, and charges to establish just and reasonable divisions thereof as between the carriers participating therein which shall not unduly prefer or prejudice any of such participating carriers.
West Virginia Legal Code