What is CARB?

CARB is a part of the California Environmental Protection Agency, an organization which reports directly to the Governor's Office in the Executive Branch of California State Government. CARB's mission is to promote and protect public health, welfare, and ecological resources through effective reduction of air pollutants while recognizing and considering effects on the economy. CARB is the lead agency for climate change programs and oversees all air pollution control efforts in California to attain and maintain health-based air quality standards.

Lower Trailer TRU Engine Emission Standards ​

Beginning with Model Year 2023 (MY2023) engines, all new trailer TRUs and genset diesel engines must meet CARB Ultra-Low-Emissions (ULETRU) standards if they are to be operated in California. This new rule applies to own­ers and operators that operate in California, regardless of whether they are registered in or outside of California.

What is Carrier Transicold Doing?

For diesel-powered Carrier Transicold trailer TRUs (X4™ and Vector™ series), CARB MY2023 compliance comes in the form of an advanced diesel engine with beneficial technologies that lower emissions and reduce fuel use.​

The latest trailer products in our X4 and Vector series use an advanced version of the smart engine used throughout our existing trailer platforms. Its common-rail fuel injection optimizes fuel delivery, reducing fuel consumption by 5% to 10%, and a new third speed, called “eco speed,” adds to the fuel savings by automatically decreasing TRU engine RPMs during intervals where conditions permit. ​

Lower fuel consumption alone means proportionately less emissions, but the common-rail fuel system and a diesel oxidation catalyst in our system push particulate, hydrocarbon and NOx emissions to new lows without requiring complex exhaust gas recirculation. The 96% reduction in particulates achieves lifetime compliance under CARB’s latest regulation for TRUs.