The commissioner shall have the authority to promulgate rules and regulations for the safe operation of motor vehicles and drivers and the safe transportation of hazardous materials. Any such rules and regulations promulgated or deemed necessary by the commissioner shall include the following:

(1) Every motor vehicle and all parts thereof shall be maintained in a safe condition at all times; and the lights, brakes, and equipment shall meet such safety requirements as the commissioner shall from time to time promulgate. Specifically but without limitation, the commission shall promulgate rules or regulations for the safe operation of trailers or semitrailers effective on and after July 1, 2000, consistent with the applicable provisions of Code Section 40-8-50;

(2) Every driver employed to operate a motor vehicle for a motor common or contract carrier shall be at least 18 years of age, of temperate habits and good moral character, possess a valid driver's license, not use or possess prohibited drugs or alcohol while on duty, and shall be fully competent to operate the motor vehicle under his or her charge;

(3) Accidents arising from or in connection with the operation of motor common or contract carriers shall be reported to the commissioner in such detail and in such manner as the commissioner may require; and

(4) The commissioner shall require every motor common and contract carrier to have attached to each unit or vehicle such distinctive markings or tags as shall be adopted by the commissioner.