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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Sep 16, 2025
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Title 49
Chapter VI
Part 665 - PART 665—BUS TESTING
Subpart A [§ 665.1 - § 665.7] - Subpart A—General
Subpart B [§ 665.11 - § 665.13] - Subpart B—Bus Testing Procedures
Subpart C [§ 665.21 - § 665.27] - Subpart C—Operations
Subpart 0 -
Appendix Appendix A - Appendix A to Part 665—Bus Model Scoring System and the Pass/Fail Standard
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