(1) The department may regulate and prohibit the parking of any type of vehicle on any public road on the state highway system, including extensions thereof into or through municipalities. Whenever any state or local law enforcement officer finds a vehicle parked in violation of law or the department's regulations, such officer or employee is authorized to move such vehicle or require the driver or other person in charge of the vehicle to move the same. If the vehicle is unattended, such officer is authorized to remove or provide for the removal of such vehicle to the nearest garage or other place of safety at the owner's expense. State or local law enforcement officers and the department are further authorized, with or without the consent of the owner, to remove or have removed any obstruction, cargo, or personal property which is abandoned, unattended, or damaged as a result of a vehicle accident which the department determines to be a threat to public health or safety or to mitigate traffic congestion, and any person or towing service that is removing an obstruction, cargo, or personal property at the location of such obstruction, cargo, or personal property upon instruction by a law enforcement officer, an official of a fire department acting under the authority of paragraph (1) of Code Section 25-3-1 or paragraph (3) of Code Section 25-3-2, or an official of the department shall be liable only for gross negligence;

(2) A county may regulate and control the parking of vehicles on the county road system and to this end the county may place parking meters on or immediately adjacent to any or all such roads, except extensions into a municipality, for the purpose of authorizing timed parking in designated spaces upon the payment of a charge for such privilege. A county may also place such parking meters on or adjacent to any public road on the state highway system located within the county and outside the corporate limits of a municipality when authorized by the department pursuant to paragraph (1) of this Code section;

(3) A municipality may regulate and control the parking of vehicles on its municipal street system and on extensions of a county road system within its corporate limits and to this end may place parking meters on or immediately adjacent to any or all of such roads for the purpose of authorizing timed parking in designated spaces upon the payment of a charge for such privilege. A municipality also may place such parking meters on or adjacent to any public road on the state highway system located within the corporate limits of the municipality when authorized by the department pursuant to paragraph (1) of this Code section; and

(4) It shall be unlawful for any person to park or leave unattended any vehicle upon the right of way of any public road on the state highway system for over 48 hours.