{"abstract":"In this action, EPA proposes new emission standards and related provisions for heavy-duty engines intended for highway operation, beginning in the 2004 model year. The proposed provisions represent a large reduction (approximately 50 percent) in emission of oxides of nitrogen (NO<INF>X), as well as reductions in hydrocarbons (HC) and nitrate particulate matter (PM) from trucks and buses. If the proposed standards are implemented, the resulting emission reductions would translate into significant, long-term improvements in air quality in many areas of the U.S. This would provide much-needed assistance to a range of states and regions facing ozone and particulate air quality problems that are causing a range of adverse health effects for their citizens, especially in terms of respiratory impairment and related illnesses. EPA is also proposing several provisions to increase the durability of emission controls and to provide flexibility for manufacturers in complying with the stringent new standards. The Agency previously published an Advance Notice of Proposed Rulemaking relating to this action and addresses here a number of the comments received on the Advance Notice. EPA believes the proposed program would result in significant progress throughout the country in protecting public health and the environment.","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/1996/06/27/96-16330.html","cfr_references":[{"chapter":null,"citation_url":null,"part":86,"title":40}],"citation":"61 FR 33421","comment_url":null,"comments_close_on":"1996-08-26","correction_of":null,"corrections":[],"dates":"EPA requests comment on the proposal rulemaking no later than August 26, 1996.","disposition_notes":null,"docket_ids":["AMS-FRL-5526-9"],"dockets":[],"document_number":"96-16330","effective_on":null,"end_page":33469,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":null,"html_url":"https://www.federalregister.gov/documents/1996/06/27/96-16330/control-of-emissions-of-air-pollution-from-highway-heavy-duty-engines","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/96-16330?publication_date=1996-06-27","mods_url":"https://www.govinfo.gov/metadata/granule/FR-1996-06-27/96-16330/mods.xml","not_received_for_publication":null,"page_length":49,"page_views":{"count":55,"last_updated":"2026-04-04 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-1996-06-27/pdf/96-16330.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"1996-06-27","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/1996/06/27/96-16330.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Transcript from EPA Hearing held August 12, 1996, at the Ypsilanti Marriott re\"Control of Emissions of Air Pollution from Highway Heavy-Duty Engines. [A-95-27-IV-F-1]","document_id":"EPA-HQ-OAR-2005-0167-0010"},{"title":"Draft Final Report Benefits of Reducing Mobile Source NOx Emissions prepared for U.S. EPA by ICF, Inc., 9-30-96 [A-95-27-IV-A-3]","document_id":"EPA-HQ-OAR-2005-0167-0009"},{"title":"The Response of Regional Ozone to voe and NOx Emissions Reductions: An Analysis for the Eastern United States Based on Regional Oxidant Modeling S.H. Chu, E.L. Meyer, W.M. Cox, R.D. Scheffe. [A-95-27-II-A-6]","document_id":"EPA-HQ-OAR-2005-0167-0008"},{"title":"Legacy Index for Docket A-95-27","document_id":"EPA-HQ-OAR-2005-0167-0003"},{"title":"Industry Characterization: On-Road Heavy Duty Diesel Engine Rebuilders [A-95-27 IV-A-02]","document_id":"EPA-HQ-OAR-2005-0167-0002"}],"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-HQ-OAR-2005-0167","supporting_documents_count":5,"docket_id":"EPA-HQ-OAR-2005-0167","regulation_id_number":null,"title":"Control of Air Pollution for Heavy-Duty Engines","checked_regulationsdotgov_at":"2019-09-02T03:00:08Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":33421,"subtype":null,"title":"Control of Emissions of Air Pollution from Highway Heavy-Duty Engines","toc_doc":null,"toc_subject":null,"topics":[],"type":"Proposed Rule","volume":61}