(A) When a motor vehicle or motorcycle of a law enforcement agency, except a motor vehicle or motorcycle operated by the department, is involved in a traffic collision that results in an injury or a death, or involves a privately-owned motor vehicle or motorcycle, regardless of whether another motor vehicle or motorcycle is involved, the State Highway Patrol shall investigate the collision and 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 is involved in a traffic collision that results in an injury or a death, or 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 shall investigate the collision, regardless of whether the collision occurred within an incorporated jurisdiction, and file a report with findings on whether the department's motor vehicle or motorcycle was operated properly within the guidelines of appropriate statutes and regulations.
(C) A law enforcement department or agency may not investigate collisions in which a motor vehicle or an employee of that department or agency is involved that results in an injury or a death, or 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 an employee of another department or agency, but lacks 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 wilfully violates the provisions of subsection (C) is subject to punishment as provided in Section 8-1-80 , even if the person's authority extends beyond a single election or judicial district.