{"abstract":"This proposed rulemaking contains procedures to be used by manufacturers of light-duty vehicles, light-duty trucks, and some heavy-duty vehicles to demonstrate, for purposes of emission certification, that new motor vehicles will comply with EPA emission standards throughout their useful lives. Today's action proposes procedures to be used by manufacturers to demonstrate the expected rate of deterioration of the emission levels of their vehicles.","action":"Notice of proposed rulemaking.","agencies":[{"raw_name":"ENVIRONMENTAL PROTECTION AGENCY","name":"Environmental Protection Agency","id":145,"url":"https://www.federalregister.gov/agencies/environmental-protection-agency","json_url":"https://www.federalregister.gov/api/v1/agencies/145","parent_id":null,"slug":"environmental-protection-agency"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2004/04/02/04-6297.html","cfr_references":[{"chapter":null,"citation_url":null,"part":86,"title":40}],"citation":"69 FR 17532","comment_url":null,"comments_close_on":"2004-05-17","correction_of":null,"corrections":[],"dates":"Written comments on this NPRM must be submitted on or before May 17, 2004. A public hearing will be held on April 19, 2004. Requests to present oral testimony must be received on or before April 12, 2004. If EPA receives no requests to present oral testimony by this date, the hearing will be canceled.","disposition_notes":null,"docket_ids":["FRL-7638-8"],"dockets":[],"document_number":"04-6297","effective_on":null,"end_page":17568,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2004/04/02/04-6297.xml","html_url":"https://www.federalregister.gov/documents/2004/04/02/04-6297/emission-durability-procedures-for-new-light-duty-vehicles-light-duty-trucks-and-heavy-duty-vehicles","images":{"EP02AP04.004":{"large":"https://img.federalregister.gov/EP02AP04.004/EP02AP04.004_large.png","medium":"https://img.federalregister.gov/EP02AP04.004/EP02AP04.004_medium.png","original_size":"https://img.federalregister.gov/EP02AP04.004/EP02AP04.004_original_size.png"},"EP02AP04.002":{"large":"https://img.federalregister.gov/EP02AP04.002/EP02AP04.002_large.png","medium":"https://img.federalregister.gov/EP02AP04.002/EP02AP04.002_medium.png","original_size":"https://img.federalregister.gov/EP02AP04.002/EP02AP04.002_original_size.png"},"EP02AP04.003":{"large":"https://img.federalregister.gov/EP02AP04.003/EP02AP04.003_large.png","medium":"https://img.federalregister.gov/EP02AP04.003/EP02AP04.003_medium.png","original_size":"https://img.federalregister.gov/EP02AP04.003/EP02AP04.003_original_size.png"},"EP02AP04.000":{"large":"https://img.federalregister.gov/EP02AP04.000/EP02AP04.000_large.png","medium":"https://img.federalregister.gov/EP02AP04.000/EP02AP04.000_medium.png","original_size":"https://img.federalregister.gov/EP02AP04.000/EP02AP04.000_original_size.png"},"EP02AP04.001":{"large":"https://img.federalregister.gov/EP02AP04.001/EP02AP04.001_large.png","medium":"https://img.federalregister.gov/EP02AP04.001/EP02AP04.001_medium.png","original_size":"https://img.federalregister.gov/EP02AP04.001/EP02AP04.001_original_size.png"}},"images_metadata":{"EP02AP04.004":{"large":{"identifier":"EP02AP04.004","content_type":"image/png","size":18638,"width":823,"sha":"37d86663ae405c5469875eb3a79e8cf0","url":"https://img.federalregister.gov/EP02AP04.004/EP02AP04.004_large.png","height":502},"medium":{"identifier":"EP02AP04.004","content_type":"image/png","size":6758,"width":392,"sha":"639a6057e4426c073c345f0c44a7231f","url":"https://img.federalregister.gov/EP02AP04.004/EP02AP04.004_medium.png","height":239},"original_size":{"identifier":"EP02AP04.004","content_type":"image/png","size":25027,"width":2958,"sha":"d4b64e6c06d20a489d178b74c665c547","url":"https://img.federalregister.gov/EP02AP04.004/EP02AP04.004_original_size.png","height":1805}},"EP02AP04.002":{"large":{"identifier":"EP02AP04.002","content_type":"image/png","size":24126,"width":823,"sha":"9056fbf6be13006c2472bc4863a30308","url":"https://img.federalregister.gov/EP02AP04.002/EP02AP04.002_large.png","height":500},"medium":{"identifier":"EP02AP04.002","content_type":"image/png","size":9695,"width":411,"sha":"6748ebb857f95f7d8655054de24978a2","url":"https://img.federalregister.gov/EP02AP04.002/EP02AP04.002_medium.png","height":250},"original_size":{"identifier":"EP02AP04.002","content_type":"image/png","size":40888,"width":3101,"sha":"1a62d67d1648b70295f1f352d739613a","url":"https://img.federalregister.gov/EP02AP04.002/EP02AP04.002_original_size.png","height":1885}},"EP02AP04.003":{"large":{"identifier":"EP02AP04.003","content_type":"image/png","size":24959,"width":821,"sha":"6d3769cbb4774d645c01d104c0f8cb08","url":"https://img.federalregister.gov/EP02AP04.003/EP02AP04.003_large.png","height":488},"medium":{"identifier":"EP02AP04.003","content_type":"image/png","size":9261,"width":404,"sha":"9d21054768c91612958bf88387bf56df","url":"https://img.federalregister.gov/EP02AP04.003/EP02AP04.003_medium.png","height":240},"original_size":{"identifier":"EP02AP04.003","content_type":"image/png","size":34712,"width":3048,"sha":"63360be3a521270ba96d7022e12234b1","url":"https://img.federalregister.gov/EP02AP04.003/EP02AP04.003_original_size.png","height":1811}},"EP02AP04.000":{"large":{"identifier":"EP02AP04.000","content_type":"image/png","size":27687,"width":823,"sha":"8e7b54973358588d4326086f6b5e902a","url":"https://img.federalregister.gov/EP02AP04.000/EP02AP04.000_large.png","height":535},"medium":{"identifier":"EP02AP04.000","content_type":"image/png","size":11662,"width":449,"sha":"5e83072a99d3818b19cbaaeb40b76385","url":"https://img.federalregister.gov/EP02AP04.000/EP02AP04.000_medium.png","height":292},"original_size":{"identifier":"EP02AP04.000","content_type":"image/png","size":36727,"width":3399,"sha":"180d5b49cb9e05449d60836ed8beaeed","url":"https://img.federalregister.gov/EP02AP04.000/EP02AP04.000_original_size.png","height":2209}},"EP02AP04.001":{"large":{"identifier":"EP02AP04.001","content_type":"image/png","size":24120,"width":799,"sha":"e68a7ebe48d6de1b6b321b1f7eef84b7","url":"https://img.federalregister.gov/EP02AP04.001/EP02AP04.001_large.png","height":537},"medium":{"identifier":"EP02AP04.001","content_type":"image/png","size":9251,"width":376,"sha":"4bfaf8e7464fb533b613b11ac88be6cf","url":"https://img.federalregister.gov/EP02AP04.001/EP02AP04.001_medium.png","height":253},"original_size":{"identifier":"EP02AP04.001","content_type":"image/png","size":30592,"width":2840,"sha":"17cef97a655ca4168a93d5c75af05b07","url":"https://img.federalregister.gov/EP02AP04.001/EP02AP04.001_original_size.png","height":1908}}},"json_url":"https://www.federalregister.gov/api/v1/documents/04-6297?publication_date=2004-04-02","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2004-04-02/04-6297/mods.xml","not_received_for_publication":null,"page_length":37,"page_views":{"count":1919,"last_updated":"2026-10-23 00:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2004-04-02/pdf/04-6297.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2004-04-02","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2004/04/02/04-6297.txt","regulation_id_number_info":{"2060-AK76":{"issue":"200404","html_url":"https://www.federalregister.gov/regulations/2060-AK76/emissions-durability-procedures-for-new-light-duty-vehicles-and-light-duty-trucks","title":"Emissions Durability Procedures for New Light-Duty Vehicles and Light-Duty Trucks","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=200404&RIN=2060-AK76&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["2060-AK76"],"regulations_dot_gov_info":{"checked_regulationsdotgov_at":"2011-11-12T11:15:24Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":17532,"subtype":null,"title":"Emission Durability Procedures for New Light-Duty Vehicles, Light-Duty Trucks and Heavy-Duty Vehicles","toc_doc":"Light-duty vehicles, light-duty trucks, and heavy-duty vehicles; emission durability procedures","toc_subject":"Air pollution control; new motor vehicles and engines:","topics":["Air pollution control","Confidential business information","Environmental protection","Motor vehicle pollution","Reporting and recordkeeping requirements"],"type":"Proposed Rule","volume":69}