California mulls emissions plan for big trucks
By Leonard Anderson
SAN FRANCISCO (Reuters) – California air-quality regulators
are considering a requirement that big-rig trucks install
computer systems to pinpoint on-the-road emissions problems, a
move that could spur a change in federal rules.
The California Air Resources Board, or ARB, is expected to
vote on July 21 on what would be the first such regulations in
the United States for heavy-duty trucks, and the federal
Environmental Protection Agency is likely to approve a similar
rule, the ARB said.
California, the most populous U.S. state, often leads the
way on environmental policy, and cars and light trucks in the
state already face similar rules for diagnostic systems to
alert drivers to air-quality problems.
There are an estimated 1 million to 1.5 million big-rig
trucks traveling on California highways, each emitting more
than 5 pounds a day of nitrogen oxide, the main ingredient of
smog, and particulate matter, or soot, according to the ARB.
The agency estimates the system’s cost at $130 per truck.
“It should find out immediately what’s wrong with the truck and
it should pay for itself very quickly,” ARB spokesman Jerry
A trade group for manufacturers of truck engines is working
with the California regulators and the EPA on the diagnostic
The standards would be phased in for big-rig engines
beginning in 2010 and fully implemented in the 2013 model year.
The timing is linked to tougher California air pollution
rules for trucks that will go into effect from 2007 to 2010,
according to the ARB.
The new plan will extend the agency’s aggressive oversight
of vehicle emissions.
Last September, the ARB adopted the first rules in the U.S.
to reduce car emissions linked to global warming, including
carbon dioxide and other gases. It aims to cut those emissions
by as much as 25 percent beginning with the 2009 model year,
rising as high as 34 percent in 2016.
Automakers have challenged those standards in a federal
Under the proposed rule for big trucks, a vehicle weighing
more than 7 tons, or 14,000 pounds, would need an on-board
diagnostic computer and software to detect breakdowns in
virtually every part and system to control emissions.
The computer would monitor fuel, catalysts, exhaust gas
recirculation, soot filters, cooling, and other systems and
alert the driver to malfunctions as they occur via warning
lights on the instrument panel.
California will require diagnostics in 2007 for heavy-duty
gasoline and diesel truck engines but that regulation will
check fewer emission controls than the new order would.
Passenger cars and light- and medium-duty trucks are already
required to have on-board monitoring systems.
Joe Suchecki, a spokesman for the Engine Manufacturers
Association, said the trade group “has been in constant
discussions with the ARB and has made a lot of progress. Costs
and technology feasibility are issues in making it a reasonable
The trade group represents 27 companies like Cummins Inc. ,
International Truck and Engine Corp., General Motors Corp. and
Ford Motor Co. .