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Tire Service Blog



September 29, 2017

The California Air Resources Board (ARB) reminds model year (MY) 2010 transport refrigeration unit (TRU) owners:  If you want to qualify for compliance extensions, only about a month remains before the purchase order deadline for ordering Level 3 verified diesel emissions control strategies (VDECS), such as diesel particulate filters (DPF) for retrofitting your engines.


MY 2010 TRU and TRU generator set engines must comply with the TRU Regulation’s in-use performance standards by December 31, 2017.  Also, MY 2003 TRU engines that met the Low-Emission TRU (LETRU) In-Use Performance Standard in 2010 also need to meet the Ultra-Low-Emission In-Use Standard or be replaced by the end of 2017.


Please be aware that replacement engines are no longer a compliance option because replacement engines must be cleaner than the old engine being replaced and there is no replacement engine that fits and functions that is cleaner than a MY 2010 engine (see TRU Advisory 13-18, page 7 for more detailed explanation at:



Please be aware that orders for replacement units that are placed after August 31st will NOT be eligible for compliance extensions if delivery or installation will be completed after December 31st, 2017.


The TRU Regulation also does not allow compliance extensions if orders for Verified Diesel Emission Control Strategies (VDECS), such as Level 3 DPFs, are placed after October 31,2017 and installation is not completed by December 31st, 2017.


However, if MY 2010 TRU owners order VDECS (Level 3 DPFs) before the end of October, installation by the end of 2017 is very likely possible.  More importantly, if you order a Level 3 DPF before October 31st and delivery or installation is delayed so that you can’t comply by the end of 2017, you may qualify for a compliance extension. 


To qualify for compliance extension:

  • Purchase orders for Level 3 DPFs must be placed before October 31st,
  • The TRU must be registered in ARB’s Equipment Registration (ARBER) system, and
  • An application for extension must be submitted to ARB with the required documentation before December 31, 2017.


Again, MY 2010 TRU owners that place orders for Level 3 VDECS after October 31st will NOT qualify for this compliance extension if they discover they cannot comply by December 31st due to delays in delivery or installation.


Owners must exercise due diligence in attempting to comply by the end of 2016.  Due diligence means conducting the compliance process with a measure of prudence, responsibility, and diligence that is expected from, and ordinarily exercised by a reasonable and prudent person under the circumstances.  For example, start the research, budgeting, and financing well in advance of the compliance deadline, and purchase the compliance technology before the purchase order deadline.  The compliance extension application (with attached supporting documentation that demonstrates due diligence was used) must be received at ARB by December 31, 2017.


For general information about the TRU Regulation and VDECS information, the TRU Website is at:



Scroll down toward the end of the webpage for Level 3 VDECS information.


The ARBER registration website is at:



ARBER Registration Help pages are at:



TRU Advisories are listed at:



TRU Compliance extension applications are at:



If you have questions about compliance or registration in ARBER, please call the TRU Help Line at 1-888-878-2826 or call 1-916-327-8737.


Background:  TRUs are refrigeration systems powered by integral diesel internal combustion engines designed to control the environment of temperature-sensitive products that are transported in trucks, semi-trailers, shipping containers, and railcars.  The emissions from these units are a source of unhealthful air pollutants including particulate matter, toxic air contaminants, nitrogen oxides, carbon monoxide, hydrocarbons, and greenhouse gases, that all pose a potential threat to both public health and the environment.  These units often congregate in large numbers at California distribution centers, grocery stores, and other facilities where they run for extended periods of time to ensure their perishable contents remain cold or frozen. These distribution and loading facilities are often in close proximity to schools, hospitals, eldercare facilities, childcare facilities, and residential neighborhoods.  In 2004, the TRU Airborne Toxic Control Measure (ATCM) was adopted by the Board to reduce diesel particulate matter emissions from TRUs and TRU gen set engines.  Amendments were adopted by the Board in November 2010 and October 2011.

Written on Friday, September 29, 2017 by
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