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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 40
Chapter I
Part 1066
Subpart H - Subpart H—Cold Temperature Test Procedures
§ 1066.701 -
§ 1066.710 - Cold temperature testing procedures for measuring NMOG, NOX, PM, and CO emissions and determining fuel economy.
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