Requirements for placing CARB ID numbers

The California Air Resources Board (CARB) has issued an advisory explaining the requirements for affixing or painting CARB Identification Numbers on transport refrigeration unit (TRU) housings.

ID numbers are mandated by California's TRU Airborne Toxic Control Measure.

The TRU advisory can be accessed at www.arb.ca.gov/diesel/tru/documents/advisory_08_10.pdf.