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Title 40

Displaying title 40, up to date as of 7/14/2026. Title 40 was last amended 7/14/2026.
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Title 40Protection of EnvironmentPart / Section
Chapter IEnvironmental Protection Agency1 – 1099
Subchapter UAir Pollution Controls1000 – 1099
Part 1066Vehicle-Testing Procedures1066.1 – 1066.1010
Subpart AApplicability and General Provisions1066.1 – 1066.25
Subpart BEquipment, Measurement Instruments, Fuel, and Analytical Gas Specifications1066.101 – 1066.150
Subpart CDynamometer Specifications1066.201 – 1066.290
Subpart DCoastdown1066.301 – 1066.315
§ 1066.301Overview of road-load determination procedures.
§ 1066.305Procedures for specifying road-load forces for motor vehicles at or below 14,000 pounds GVWR.
§ 1066.310Coastdown procedures for vehicles above 14,000 pounds GVWR.
§ 1066.315Dynamometer road-load setting.
Subpart EPreparing Vehicles and Running an Exhaust Emission Test1066.401 – 1066.425
Subpart FElectric Vehicles and Hybrid Electric Vehicles1066.501
§ 1066.501Overview.
Subpart GCalculations1066.601 – 1066.695
Subpart HCold Temperature Test Procedures1066.701 – 1066.710
§ 1066.701Applicability and general provisions.
§ 1066.710Cold temperature testing procedures for measuring NMOG, NOX, PM, and CO emissions and determining fuel economy.
Subpart IExhaust Emission Test Procedures for Motor Vehicles1066.801 – 1066.845
Subpart JEvaporative Emission Test Procedures1066.901 – 1066.985
Subpart KDefinitions and Other Reference Material1066.1001 – 1066.1010
§ 1066.1001Definitions.
§ 1066.1005Symbols, abbreviations, acronyms, and units of measure.
§ 1066.1010Incorporation by reference.