title: States challenged by 2009 MUTCD deadlines.
authors.forename: Jerry
authors.initials: J
authors.lastname: Laws
mesh_terms: D000062:Accidents, Occupational / Q000331:legislation & jurisprudence* / Q000517:prevention & control; D000063:Accidents, Traffic / Q000331:legislation & jurisprudence* / Q000517:prevention & control; D006801:Humans; D011482:Protective Devices; D014186:Transportation; D014481:United States