{"abstract":"On May 9, 2011, FMCSA published a final rule titled \"Commercial Driver's License Testing and Commercial Learner's Permit Standards.\" Among other things, the rule revised the definition of \"tank vehicle.\" The change required additional drivers, primarily those transporting certain tanks temporarily attached to the commercial motor vehicle (CMV), to obtain a tank vehicle endorsement on their commercial driver's license (CDL). The Agency has since received numerous questions and requests for clarification. This notice responds to questions about the new definition and the compliance date for drivers to obtain the tank vehicle endorsement.","action":"Notice of regulatory guidance and applicability of \"tank vehicle\" definition.","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":"Federal Motor Carrier Safety Administration","name":"Federal Motor Carrier Safety Administration","id":181,"url":"https://www.federalregister.gov/agencies/federal-motor-carrier-safety-administration","json_url":"https://www.federalregister.gov/api/v1/agencies/181","parent_id":492,"slug":"federal-motor-carrier-safety-administration"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2012/05/24/2012-12692.html","cfr_references":[{"chapter":null,"citation_url":null,"part":383,"title":49},{"chapter":null,"citation_url":null,"part":384,"title":49},{"chapter":null,"citation_url":null,"part":385,"title":49}],"citation":"77 FR 30919","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"Effective date for the regulatory guidance: May 24, 2012.","disposition_notes":null,"docket_ids":["Docket No. FMCSA-2007-27659"],"dockets":[{"supporting_documents":[{"title":"PRA Supporting Statement","document_id":"FMCSA-2007-27659-0119"},{"title":"Final Rule Regulatory Evaluation","document_id":"FMCSA-2007-27659-0118"},{"title":"4/14/2008 - This item was withdrawn as it was posted without the image.  See FMCSA-2007-27659-0007.","document_id":"FMCSA-2007-27659-0006"}],"agency_name":"FMCSA","documents":[{"comment_count":1,"comment_start_date":"2012-05-24","updated_at":"2025-10-17T16:55:54.216-04:00","comment_url":"https://www.regulations.gov/commenton/FMCSA-2007-27659-0161","allow_late_comments":false,"id":"FMCSA-2007-27659-0161","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":3,"id":"FMCSA-2007-27659","title":"Commercial Driver's License Testing and Commercial Learner's Permit Standards"}],"document_number":"2012-12692","effective_on":"2012-05-24","end_page":30921,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2012/05/24/2012-12692.xml","html_url":"https://www.federalregister.gov/documents/2012/05/24/2012-12692/commercial-drivers-license-testing-and-commercial-learners-permit-standards","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2012-12692?publication_date=2012-05-24","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2012-05-24/2012-12692/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":4712,"last_updated":"2026-10-24 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2012-05-24/pdf/2012-12692.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2012-12692.pdf?1337777469","publication_date":"2012-05-24","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2012/05/24/2012-12692.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[{"title":"PRA Supporting Statement","document_id":"FMCSA-2007-27659-0119"},{"title":"Final Rule Regulatory Evaluation","document_id":"FMCSA-2007-27659-0118"},{"title":"4/14/2008 - This item was withdrawn as it was posted without the image.  See FMCSA-2007-27659-0007.","document_id":"FMCSA-2007-27659-0006"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2126-AB02/commercial-driver-s-license-testing-and-commercial-learner-s-permit-standards","title":"Commercial Driver's License Testing and Commercial Learner's Permit Standards"},"comments_count":1,"agency_id":"FMCSA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=FMCSA-2007-27659","supporting_documents_count":3,"docket_id":"FMCSA-2007-27659","document_id":"FMCSA-2007-27659-0161","regulation_id_number":"2126-AB02","title":"Commercial Driver's License Testing and Commercial Learner's Permit Standards","checked_regulationsdotgov_at":"2025-10-18T22:55:03Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":30919,"subtype":null,"title":"Commercial Driver's License Testing and Commercial Learner's Permit Standards","toc_doc":"Commercial Driver's License Testing and Commercial Learners Permit Standards","toc_subject":null,"topics":[],"type":"Rule","volume":77}