Transport Refrigeration Unit
Transport Refrigeration Units (TRU) are powered by diesel internal combustion engines and are designed to refrigerate or heat perishable goods that are transported in various containers. Significant numbers of these units congregate at distribution centers, truck stops, and other facilities, emitting diesel particulate matter (PM) pollutant emissions, a toxic air contaminant, creating a health risk for those that live nearby. The California Air Resources Board (CARB) adopted the TRU Airborne Toxic Control Measure (ATCM) on February 26, 2004, with amendments in 2010 and 2011, to reduce diesel PM pollutant emissions.
More about this program
New TRU Regulation
A new TRU regulation is in development to reduce residual public health risk from TRU activities, especially near the most impacted communities.