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CARB adopts new emission requirements for transport refrigeration units

25 February 2022

The California Air Resources Board (CARB) approved amendments to its rule for Transport Refrigeration Units (TRUs) operating in the state. The 2022 amendments will require a variety of actions designed to reduce TRU emissions and accelerate their transition to zero-emission technologies.

The new requirements include the transition of diesel-powered truck TRUs to zero‑emission; a PM emission standard for newly manufactured non-truck TRU engines (on trailers, domestic shipping containers, railcars, and generator set units); the use of lower global warming potential refrigerants; facility registration and reporting; expanded reporting and labeling; and fees.

Beginning 31 December 2022:

Beginning December 31, 2023:

Source: CARB