With a location in Flagstaff, Ariz., the Arizona Highway Patrol Division is a law enforcement agency that ensures the safe and expeditious use of the highway transportation system for the public. It also provides assistance to local and county law enforcement agencies. The agency is a part of the Arizona Department of Public Safety. In addition, the Arizona Highway Patrol Division provides services and enforcement for commercial motor vehicle, tow truck, school bus enforcement and safety programs. It is responsible for the air rescue and aviation services for the public safety department. The agency also conducts hazardous material training for the department and other agency personnel. Additionally, the Arizona Highway Patrol Division oversees the issuance of school bus driver certifications and inspections of school buses.