Home › USC › Title 49 › Chapter 20349 U.S.C. Chapter 203 — SAFETY APPLIANCES§ 20301— Definition and nonapplication§ 20302— General requirements§ 20303— Moving defective and insecure vehicles needing repairs§ 20304— Assumption of risk by employees§ 20305— Inspection of mail cars§ 20306— Exemption for technological improvements