{"data":{"id":"us/49-cfr-397.1","jurisdiction":"us","citation":"49 CFR 397.1","heading":"Application of the rules in this part.","body":"(a) The rules in this part apply to each motor carrier engaged in the transportation of hazardous materials by a motor vehicle which must be marked or placarded in accordance with § 177.823 of this title and to—\n(1) Each officer or employee of the motor carrier who performs supervisory duties related to the transportation of hazardous materials; and\n(2) Each person who operates or who is in charge of a motor vehicle containing hazardous materials.\n(b) Each person designated in paragraph (a) of this section must know and obey the rules in this part.","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 397—TRANSPORTATION OF HAZARDOUS MATERIALS; DRIVING AND PARKING RULES","Subpart A—General"],"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":"312d73f3dd7a7eb7c80a7150525c86e58acfd7f530e5e259d88f34ea19c877f2","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-appendix-a-to-part-396","next":"us/49-cfr-397.2"},"notice":"GroundRules: Original legal text. Not legal advice."}