(A) When a motor vehicle or motorcycle of a law enforcement agency, except a motor vehicle or motorcycle of the Department of Public Safety, is involved in a traffic collision that: (1) results in an injury or a death, or (2) involves a privately-owned motor vehicle or motorcycle, regardless of whether another motor vehicle or motorcycle is involved, the State Highway Patrol must investigate the collision and must file a report with findings on whether the agency motor vehicle or motorcycle was operated properly within the guidelines of appropriate statutes and regulations.

(B) When a motor vehicle or motorcycle of the Department of Public Safety is involved in a traffic collision that: (1) results in an injury or a death, or (2) involves a privately-owned motor vehicle or motorcycle, regardless of whether another motor vehicle or motorcycle is involved, the sheriff of the county in which the collision occurred must investigate the collision, regardless of whether the collision occurred within an incorporated jurisdiction, and must file a report with findings on whether the Department of Public Safety’s motor vehicle or motorcycle was operated properly within the guidelines of appropriate statutes and regulations.

(C) A law enforcement department or agency must not investigate a traffic collision in which a motor vehicle, a motorcycle, or an employee of that department or agency is involved that: (1) results in an injury or a death, or (2) involves a privately-owned motor vehicle or motorcycle, regardless of whether another motor vehicle or motorcycle is involved.

(D) A law enforcement agency that has primary responsibility for an investigation involving a motor vehicle, a motorcycle, or an employee of another department or agency, but lacks the expertise to conduct a proper investigation, may request assistance from another agency that has the appropriate expertise, as long as the assisting agency or an employee of the assisting agency is not a subject of the investigation. A request made pursuant to this subsection shall result in a joint investigation conducted by both agencies.

(E) A person who knowingly and wilfully violates the provisions of subsection (C) is subject to punishment as provided for in § 8-1-80, even if the person’s authority extends beyond a single election or judicial district.

(F) An investigation of a traffic collision involving a motor vehicle, a motorcycle, or an employee of a law enforcement agency or department must include a field investigation to identify possible witnesses, including possible witnesses not involved in the traffic collision, but who may have witnessed the traffic collision from a vantage point other than the collision site.

(G) For purposes of this section, "involved in a traffic collision" includes a law enforcement motor vehicle or motorcycle engaged in a pursuit when a traffic collision occurs.