{"abstract":"The National Park Service (NPS) proposes to amend the special regulations for Mammoth Cave National Park to allow bicycle use on approximately 37 miles of multi-use trails throughout the park. The proposed rule also would allow visitors to ride horses on the 5.4-mile Houchin Ferry North/Ollie Road.","action":"Proposed rule.","agencies":[{"raw_name":"DEPARTMENT OF THE INTERIOR","name":"Interior Department","id":253,"url":"https://www.federalregister.gov/agencies/interior-department","json_url":"https://www.federalregister.gov/api/v1/agencies/253","parent_id":null,"slug":"interior-department"},{"raw_name":"National Park Service","name":"National Park Service","id":362,"url":"https://www.federalregister.gov/agencies/national-park-service","json_url":"https://www.federalregister.gov/api/v1/agencies/362","parent_id":253,"slug":"national-park-service"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2026/02/09/2026-02510.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"7","title":36}],"citation":"91 FR 5700","comment_url":null,"comments_close_on":"2026-04-10","correction_of":null,"corrections":[],"dates":"Comments on the proposed rule must be received by 11:59 p.m. eastern time on April 10, 2026.","disposition_notes":null,"docket_ids":["NPS-MACA-DTS#0041023","PPSEMACAS0 PPMPSPD1Z.YM0000 255P103601"],"dockets":[{"supporting_documents":[],"agency_name":"NPS","documents":[{"comment_count":152,"comment_start_date":"2026-02-09","updated_at":"2026-04-11T01:56:46.284-04:00","comment_url":"https://www.regulations.gov/commenton/NPS-2026-0001-0001","allow_late_comments":false,"id":"NPS-2026-0001-0001","comment_end_date":"2026-04-11","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":0,"id":"NPS-2026-0001","title":"Mammoth Cave National Park; Bicycling and Horses"}],"document_number":"2026-02510","effective_on":null,"end_page":5704,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/02/09/2026-02510.xml","html_url":"https://www.federalregister.gov/documents/2026/02/09/2026-02510/mammoth-cave-national-park-bicycling-and-horses","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-02510?publication_date=2026-02-09","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-02-09/2026-02510/mods.xml","not_received_for_publication":null,"page_length":5,"page_views":{"count":984,"last_updated":"2026-05-04 10:15:06 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-02-09/pdf/2026-02510.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-02510.pdf?1770385513","publication_date":"2026-02-09","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/02/09/2026-02510.txt","regulation_id_number_info":{"1024-AE93":{"issue":"202504","html_url":"https://www.federalregister.gov/regulations/1024-AE93/mammoth-cave-national-park-bicycling-and-horses","title":"Mammoth Cave National Park; Bicycling and Horses","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202504&RIN=1024-AE93&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["1024-AE93"],"regulations_dot_gov_info":{"supporting_documents":[],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/1024-AE93/mammoth-cave-national-park-bicycling-and-horses","title":"Mammoth Cave National Park; Bicycling and Horses"},"comments_count":152,"agency_id":"NPS","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=NPS-2026-0001","supporting_documents_count":0,"docket_id":"NPS-2026-0001","document_id":"NPS-2026-0001-0001","regulation_id_number":"1024-AE93","title":"Mammoth Cave National Park; Bicycling and Horses","checked_regulationsdotgov_at":"2026-04-12T08:55:05Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":5700,"subtype":null,"title":"Mammoth Cave National Park; Bicycling and Horses","toc_doc":"Bicycling and Horses","toc_subject":"Mammoth Cave National Park","topics":["National parks","Reporting and recordkeeping requirements"],"type":"Proposed Rule","volume":91}