{"data":{"id":"us/49-cfr-525.9","jurisdiction":"us","citation":"49 CFR 525.9","heading":"Duration of exemption.","body":"An exemption may be granted under this part for not more than three model years.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER V—NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","PART 525—EXEMPTIONS FROM AVERAGE FUEL ECONOMY STANDARDS"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"b4a7dee8f1a6416d1e212c8a62b8ed794b98b8165ee0763f8c5c84fdb867fff5","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-525.8","next":"us/49-cfr-525.10"},"notice":"GroundRules: Original legal text. Not legal advice."}