Rates.

A. Tariffed service carriers shall observe nonpredatory and nondiscriminatory rates and terms of service for the transportation services they provide. A predatory or discriminatory charge for service is unlawful. B. Reduced rates for minor children accompanied by an adult, for students traveling between their homes and their schools and for persons sixty-five years of age or older shall not be considered discriminatory. A motor carrier shall not furnish free transportation to persons except to bona fide owners, officers, employees or other business personnel of the motor carrier and their dependents. C. Towing services performing nonconsensual tows may charge rates lower than the rates in their approved tariff to members of not-for-profit motor clubs after those rates have been filed with the department. D. A household goods service carrier shall establish and observe nonpredatory and nondiscriminatory rates and practices relating to the manner and method of presenting, marking, packing and delivering household goods for transportation and other matters relating to the transportation of household goods. E. In proceedings to determine the reasonableness of rates, the department shall authorize revenue levels that are adequate under honest, economical and efficient management to cover total operating expenses, including the operation of leased motor vehicles, and depreciation, plus a reasonable profit. The rules adopted by the department to implement this section shall allow a carrier to achieve revenue levels that will provide a flow of net income, plus depreciation, adequate to support prudent capital outlays, ensure the repayment of a reasonable level of debt, permit the raising of needed equity capital and attract and retain capital in amounts adequate to provide a sound motor carrier transportation system in the state.