{"data":{"id":"us/49-cfr-382.311","jurisdiction":"us","citation":"49 CFR 382.311","heading":"Follow-up testing.","body":"The requirements for follow-up testing must be performed in accordance with 49 CFR part 40, subpart O.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER III—FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER B—FEDERAL MOTOR CARRIER SAFETY REGULATIONS","PART 382—CONTROLLED SUBSTANCES AND ALCOHOL USE AND TESTING","Subpart C—Tests Required"],"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":"3f55c23db47f6239d90780a3a9e27ae13420e4b0d17eb6350212ded24d9125b5","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-382.309","next":"us/49-cfr-382.401"},"notice":"GroundRules: Original legal text. Not legal advice."}