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Owners of truck or trailer transport refrigeration units (TRU) or
TRU generator sets (gen sets) may apply for a compliance deadline
extension for the Ultra-Low-Emission TRU (ULETRU) requirements
for model year 2003 and older engines (or units) if they met the
Low-Emission TRU (LETRU) in-use standard by the original
compliance deadline. 

In order to apply, certain qualifications must be met:

1.	The TRU must be registered in Air Resources Board (ARB)
Equipment Registration (ARBER) program;
2.	The original engine or TRU met the Low Emission TRU (LETRU)
in-use standard by being retrofitted with a Level 2 Verified
Diesel Emission Control Strategy (VDECS).  LETRU may also be
achieved by  replacing the TRU or TRU engine with an EPA emission
Tier 4 engine; and
3.	Compliance with LETRU was achieved by the following compliance
dates:
   a.	December 31, 2009 for MY 2001 and older engines (MY 2001 or
older engines which met LETRU before December 31, 2008 may be
eligible for an additional year extension); or
   b.	December 31, 2009 for MY 2002 engines; or
   c.	December 31, 2010 for MY 2003 engines.

TRU owners may apply for the ULETRU extension by submitting an
application at least 90 days before the ULETRU compliance
deadline.  Application forms are only available by calling the
TRU Help Line at 1-888-878-2826.

Documentation for the purchase and installation of the new VDECS,
engine, or TRU, dated on or before the compliance date required
above must be included with the completed application.

Where can I get more information?

For general information about the TRU Regulation, the TRU Website
is at:  http://www.arb.ca.gov/diesel/tru/tru.htm

The ARBER registration website is at: 
http://www.arb.ca.gov/arber/arber.htm

ARBER Registration Help pages are at: 
http://www.arb.ca.gov/arber/trureg/trureg.htm

TRU Advisories are listed at: 
http://www.arb.ca.gov/diesel/tru/advisories.htm

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, 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, and
hydrocarbons, 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, 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.