{"operation":"document","citation":"49 CFR 174.201","title":"Class 2 (gases) material cylinders.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"(a) Except as provided in paragraphs (b) and (c) of this section, cylinders containing Class 2 (gases) materials being transported in a rail car must be:\n\n(1) Securely lashed in an upright position so as to prevent their overturning;\n\n(2) Loaded into racks securely attached to the car;\n\n(3) Packed i","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-174-201.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-174-201.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-174-201","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-174.201","body":"(a) Except as provided in paragraphs (b) and (c) of this section, cylinders containing Class 2 (gases) materials being transported in a rail car must be:\n\n(1) Securely lashed in an upright position so as to prevent their overturning;\n\n(2) Loaded into racks securely attached to the car;\n\n(3) Packed in boxes or crates of such dimensions as to prevent their overturning; or\n\n(4) Loaded in a horizontal position.\n\n(b) Specification DOT-4L (§ 178.57 of this subchapter) cylinders being transported in a rail car must be loaded in an upright position and be securely braced.\n\n(c) Cylinders containing Class 2 (gases) materials may be transported in stock cars, gondola cars and flat cars. However, they may not be transported in hopper bottom cars.\n\n[Amdt. 174-26, 41 FR 16092, Apr. 15, 1976, as amended by Amdt. 174-26A, 41 FR 40685, Sept. 20, 1976; Amdt. 174-32, 43 FR 48644, Oct. 19, 1978; Amdt. 174-68, 55 FR 52682, Dec. 21, 1990]","truncated":false,"body_characters":930}