title: Railroad crossings: the many grades of danger.
authors.forename: R N
authors.initials: RN
authors.lastname: Anderson
mesh_terms: D000059:Accidents / Q000706:statistics & numerical data*; D001334:Automobile Driving / Q000592:standards; D004632:Emergency Medical Services; D006801:Humans; D007087:Illinois; D011890:Railroads; D012449:Safety; D014481:United States