{"abstract":"FMCSA proposes to amend the Federal Motor Carrier Safety Regulations (FMCSRs) to include rear impact guards on the list of items that must be examined as part of the required annual inspection for each commercial motor vehicle (CMV). In addition, FMCSA proposes to amend the labeling requirements for rear impact guards, and to exclude road construction controlled (RCC) horizontal discharge trailers from the rear impact guard requirements, consistent with changes made by the National Highway Traffic Safety Administration (NHTSA) to the corresponding Federal Motor Vehicle Safety Standards (FMVSS). This notice of proposed rulemaking (NPRM) responds to rulemaking petitions, as well as a recommendation from the Government Accountability Office (GAO).","action":"Notice of proposed rulemaking.","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/2020/12/29/2020-27502.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"393","title":49},{"chapter":null,"citation_url":null,"part":"399","title":49}],"citation":"85 FR 85571","comment_url":null,"comments_close_on":"2021-03-01","correction_of":null,"corrections":[],"dates":"Comments on this notice must be received on or before March 1, 2021.","disposition_notes":null,"docket_ids":["Docket No. FMCSA-2019-0211"],"dockets":[{"supporting_documents":[],"agency_name":"FMCSA","documents":[{"comment_count":24,"comment_start_date":"2020-12-29","updated_at":"2026-05-13T12:57:17.834-04:00","comment_url":"https://www.regulations.gov/commenton/FMCSA-2019-0211-0001","allow_late_comments":false,"id":"FMCSA-2019-0211-0001","comment_end_date":"2021-03-02","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":0,"id":"FMCSA-2019-0211","title":"Parts and Accessories Necessary for Safe Operations; Rear Impact Guards and Rear Impact Protection"}],"document_number":"2020-27502","effective_on":null,"end_page":85578,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2020/12/29/2020-27502.xml","html_url":"https://www.federalregister.gov/documents/2020/12/29/2020-27502/parts-and-accessories-necessary-for-safe-operation-rear-impact-guards-and-rear-impact-protection","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2020-27502?publication_date=2020-12-29","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2020-12-29/2020-27502/mods.xml","not_received_for_publication":null,"page_length":8,"page_views":{"count":1390,"last_updated":"2026-09-22 04:15:07 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2020-12-29/pdf/2020-27502.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2020-27502.pdf?1609163117","publication_date":"2020-12-29","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2020/12/29/2020-27502.txt","regulation_id_number_info":{"2126-AC31":{"issue":"202110","html_url":"https://www.federalregister.gov/regulations/2126-AC31/rear-impact-guards-and-rear-impact-accessories-certification-labeling-and-annual-inspection-requirem","title":"Rear Impact Guards and Rear Impact Accessories; Certification Labeling and Annual Inspection Requirements","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202110&RIN=2126-AC31&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["2126-AC31"],"regulations_dot_gov_info":{"supporting_documents":[],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2126-AC31/rear-impact-guards-and-rear-impact-accessories-certification-labeling-and-annual-inspection-requirem","title":"Rear Impact Guards and Rear Impact Accessories; Certification Labeling and Annual Inspection Requirements"},"comments_count":24,"agency_id":"FMCSA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=FMCSA-2019-0211","supporting_documents_count":0,"docket_id":"FMCSA-2019-0211","document_id":"FMCSA-2019-0211-0001","regulation_id_number":"2126-AC31","title":"Parts and Accessories Necessary for Safe Operations; Rear Impact Guards and Rear Impact Protection","checked_regulationsdotgov_at":"2026-05-14T14:55:05Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":85571,"subtype":null,"title":"Parts and Accessories Necessary for Safe Operation; Rear Impact Guards and Rear Impact Protection","toc_doc":"Rear Impact Guards and Rear Impact Protection","toc_subject":"Parts and Accessories Necessary for Safe Operation:\n","topics":["Highway safety","Motor carriers","Motor vehicle safety","Occupational safety and health","Reporting and recordkeeping requirements"],"type":"Proposed Rule","volume":85}