{"operation":"document","citation":"49 CFR 179.220","title":"General specifications applicable to nonpressure tank car tanks consisting of an inner container supported within an outer shell (class DOT-115).","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-179-220.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-179-220.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-179-220","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-179.220","body":"","truncated":false,"body_characters":0}