Final answer:
The primary authority responsible for traffic investigations is the Ohio State Troopers.
Step-by-step explanation:
The primary authority responsible for traffic investigations varies depending on the jurisdiction. However, in many cases, traffic investigations are primarily assigned to Ohio State Troopers. State troopers are responsible for enforcing traffic laws and investigating traffic accidents within their jurisdiction. They have the training and authority to conduct thorough investigations and issue citations or make arrests when necessary.
Learn more about Traffic investigations