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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 49
Chapter II
Part 243
Subpart A - Subpart A—General
§ 243.1 - Purpose and scope.
§ 243.3 - Application and responsibility for compliance.
§ 243.5 - Definitions.
§ 243.7 - Penalties and consequences for noncompliance.
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