{"data":{"id":"us/49-cfr-383.21","jurisdiction":"us","citation":"49 CFR 383.21","heading":"Number of drivers' licenses.","body":"No person who operates a commercial motor vehicle shall at any time have more than one driver's license.","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 383—COMMERCIAL DRIVER'S LICENSE STANDARDS; REQUIREMENTS AND PENALTIES","Subpart B—Single License Requirement"],"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":"01b3bb85a73ce0831e7448f876e268cad789d1357d0fb3230cde97e98e8abeae","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-383.7","next":"us/49-cfr-383.23"},"notice":"GroundRules: Original legal text. Not legal advice."}