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Title 40

Displaying title 40, up to date as of 7/09/2026. Title 40 was last amended 7/09/2026.
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Title 40Protection of EnvironmentPart / Section
Chapter IEnvironmental Protection Agency1 – 1099
Subchapter CAir Programs50 – 99
Part 86Control of Emissions from New and In-Use Highway Vehicles and Engines86.1 – 86.1999
Subpart FEmission Regulations for 1978 and Later New Motorcycles; Test Procedures86.501-78 – 86.599
§ 86.501-78Applicability.
§ 86.502-78Definitions.
§ 86.503-78Abbreviations.
§ 86.504-78Section numbering.
§ 86.505-2004Introduction; structure of subpart.
§ 86.508-78Dynamometer.
§ 86.509-90Exhaust gas sampling system.
§ 86.511-90Exhaust gas analytical system.
§ 86.513Fuel and engine lubricant specifications.
§ 86.514-78Analytical gases.
§ 86.515-78EPA urban dynamometer driving schedule.
§ 86.516-90Calibrations, frequency and overview.
§ 86.518-78Dynamometer calibration.
§ 86.519-90Constant volume sampler calibration.
§ 86.521-90Hydrocarbon analyzer calibration.
§ 86.522-78Carbon monoxide analyzer calibration.
§ 86.523-78Oxides of nitrogen analyzer calibration.
§ 86.524-78Carbon dioxide analyzer calibration.
§ 86.526-90Calibration of other equipment.
§ 86.527-90Test procedures, overview.
§ 86.528-78Transmissions.
§ 86.529-98Road load force and inertia weight determination.
§ 86.530-78Test sequence, general requirements.
§ 86.531-78Vehicle preparation.
§ 86.532-78Vehicle preconditioning.
§ 86.535-90Dynamometer procedure.
§ 86.536-78Engine starting and restarting.
§ 86.537-90Dynamometer test runs.
§ 86.540-90Exhaust sample analysis.
§ 86.542-90Records required.
§ 86.544-90Calculations; exhaust emissions.
§§ 86.545-86.599 [Reserved]