U.S. Code of Federal Regulations

Regulations most recently checked for updates: Sep 16, 2025

All TitlesTitle 49Chapter VIPart 663Subpart A - Subpart A—General
§ 663.1 - Purpose.
§ 663.3 - Scope.
§ 663.5 - Definitions.
§ 663.7 - Certification of compliance to FTA.
§ 663.9 - Audit limitations.
§ 663.11 - Audit financing.
§ 663.13 - Buy America requirements.
§ 663.15 - Compliance.
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