{"abstract":"RSPA is proposing to amend the Hazardous Materials Regulations to prohibit flammable liquids from being transported in unprotected product piping on existing and newly manufactured DOT specification cargo tank motor vehicles. If adopted as proposed, this action will reduce fatalities and injuries that result from accidents involving unprotected product piping. This proposal was developed jointly with the Federal Motor Carrier Safety Administration.","action":"Notice of proposed rulemaking (NPRM).","agencies":[{"raw_name":"DEPARTMENT OF TRANSPORTATION","name":"Transportation Department","id":492,"url":"https://www.federalregister.gov/agencies/transportation-department","json_url":"https://www.federalregister.gov/api/v1/agencies/492","parent_id":null,"slug":"transportation-department"},{"raw_name":"Research and Special Programs Administration","name":"Research and Special Programs Administration","id":451,"url":"https://www.federalregister.gov/agencies/research-and-special-programs-administration","json_url":"https://www.federalregister.gov/api/v1/agencies/451","parent_id":492,"slug":"research-and-special-programs-administration"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2004/12/30/04-28561.html","cfr_references":[{"chapter":null,"citation_url":null,"part":173,"title":49}],"citation":"69 FR 78375","comment_url":null,"comments_close_on":"2005-02-28","correction_of":null,"corrections":[],"dates":"Comments must be received by February 28, 2005.","disposition_notes":null,"docket_ids":["Docket No. RSPA-99-6223 (HM-213B)"],"dockets":[],"document_number":"04-28561","effective_on":null,"end_page":78384,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2004/12/30/04-28561.xml","html_url":"https://www.federalregister.gov/documents/2004/12/30/04-28561/hazardous-materials-safety-requirements-for-external-product-piping-on-cargo-tanks-transporting","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/04-28561?publication_date=2004-12-30","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2004-12-30/04-28561/mods.xml","not_received_for_publication":null,"page_length":10,"page_views":{"count":229,"last_updated":"2026-07-26 16:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2004-12-30/pdf/04-28561.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2004-12-30","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2004/12/30/04-28561.txt","regulation_id_number_info":{"2137-AD36":{"issue":"200404","html_url":"https://www.federalregister.gov/regulations/2137-AD36/hazardous-materials-safety-requirements-for-external-product-piping-on-cargo-tanks-transporting-flam","title":"Hazardous Materials: Safety Requirements for External Product Piping on Cargo Tanks Transporting Flammable Liquids","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=200404&RIN=2137-AD36&operation=OPERATION_EXPORT_XML","priority_category":"Other Significant"}},"regulation_id_numbers":["2137-AD36"],"regulations_dot_gov_info":{"checked_regulationsdotgov_at":"2011-11-12T14:18:57Z"},"regulations_dot_gov_url":null,"significant":true,"signing_date":null,"start_page":78375,"subtype":null,"title":"Hazardous Materials: Safety Requirements for External Product Piping on Cargo Tanks Transporting Flammable Liquids","toc_doc":"External product piping on cargo tanks transporting flammable liquids; safety requirements","toc_subject":"Hazardous materials:","topics":["Hazardous materials transportation","Packaging and containers","Radioactive materials","Uranium"],"type":"Proposed Rule","volume":69}