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Emissions requirements in California are regulated by CARB (California Air Resources Board). For many applications, CARB issues regulatory requirements separately from the EPA, although emissions standards might be aligned with the Federal ones. Updated heavy duty emissions standards will apply from MY 2024 and after. Electrification requirements for heavy duty vehicles will also come into effect from model year 2024.
Content overview
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New emissions standards - from 2024
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Overview
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New emissions standards - diesel engines
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Emissions limits
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Idling requirements
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Useful life values
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New emissions standards - Otto-cycle engines
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Emissions limits
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Useful life values
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Test Procedures
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Diesel engines
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Otto-cycle engines
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In-use testing programme
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Diesel engine vehicles
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Otto-cycle engine vehicles
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Advanced Clean Trucks Regulation
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Overview
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Deficits calculation
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Credits calculation
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Compliance with the regulation
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References
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