The primary duties of a Missouri State Highway Patrol Trooper are to promote safety and enforce traffic laws for the motoring public. A trooper provides assistance to motorists and is responsible for investigating highway traffic crashes and other roadway emergencies. Other responsibilities include assisting local peace officers upon request, investigating crimes, and enforcing criminal laws. A trooper must work under all climatic conditions and is frequently required to drive at high speeds. Work schedules change regularly, and officers are subject to call at any time.