Which type of agency has statewide police powers for traffic regulation and arresting non-traffic violators?

The agency that has statewide police powers for traffic regulation and the authority to arrest non-traffic violators is the Highway Patrol. Highway Patrol agencies primarily focus on enforcing traffic laws and maintaining safety on the highways, but they also possess the powers to intervene in non-traffic-related incidents when necessary. This includes the ability to arrest suspects involved in crimes that may occur on or near highways, allowing them to operate effectively across the entire state.

This broad authority distinguishes the Highway Patrol from agencies that may have more limited jurisdiction, such as county sheriff's offices, which primarily focus on law enforcement in specific counties. State police also engage in traffic enforcement, yet their broader mandate often extends to criminal investigations, which might not focus solely on highway-related incidents. Tribal police operate within sovereign tribal lands and have a different jurisdictional scope that typically doesn’t extend statewide.