title: National Highway Traffic Safety Administration (NHTSA) notes.
mesh_terms: D004632:Emergency Medical Services / Q000191:economics / Q000458:organization & administration* / Q000706:statistics & numerical data; D006801:Humans; D010865:Pilot Projects; D012424:Rural Population; D011795:Surveys and Questionnaires; D014481:United States; D014505:Urban Population