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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 apply from MY 2024. Electrification requirements for heavy duty vehicles are also in place, from model year 2024.
Content overview
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Updates on the implementation of the MY 2024 and after emissions standards and ACT programme
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Disapproval of permission to implement HD Omnibus and Advance Clean Trucks
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Publication of emergency legislation in California
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Current status for heavy duty vehicles legislation
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New emissions standards - from 2024
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Overview
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Proposed amendments
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Alignment to EPA provisions
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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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2024 amendments and proposed updates
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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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