Green Bus

Caterpillar Launches Diesel Awareness Campaign

MOSSVILLE, Ill. - Tired of, and even threatened by, the critics of diesel-fueled engines, Caterpillar has launched the Diesel Engine Campaign Association to represent the industry and educate the public on the merits of today's low-emission diesel-powered products.

Engine Manufacturers Question Study of Diesel Emissions

CHICAGO -- The South Coast Air Quality Management District, a strong advocate of removing diesel-powered buses and trucks from California roads, is scheduled to release a critical report on toxic emissions but before that occurs, major revisions are needed according to the Engine Manufacturers Association. The association states "major revisions are needed to improve the accuracy and usefulness" of the AQMD's Multiple Air Toxics Exposure Study (MATES II).

"Our main concern is that the public will be misled," said EMA executive director Glenn Keller. "The methods used in the draft MATES II report incorrectly estimate cancer risks and describe them as 'average risks' to the public. That's simply not true."

The EMA, which represents worldwide manufacturers of internal combustion engines, including Caterpillar, Cummins, GMC and International, claims scientific researchers have identified significant uncertainties and errors in the way AQMD staff determined the health risks of toxic air contaminants in the report. In particular, EMA cited inaccurate estimates of diesel particulates, noting the calculation is based on "outdated and incomplete data from the early 80s." The association also states the risk levels are not real-life exposure levels.


SCAQMD Proposes Replacement of Diesel Fuel Buses, Trucks

DIAMOND BAR, Calif. -- The South Coast Air Quality Management District, the air pollution control agency for much of Southern California, has proposed a rule requiring government agencies and their contractors, including school bus operators, to make a gradual shift to "clean burning" fuels.

Court Denies EPA Appeal to Tighten Emission Standards

WASHINGTON, D.C. -- The U.S. District Court of Appeals in Washington D.C. rejected the Environmental Protection Agency's new limits on ozone and particulate matter, meaning the impact of the agency's emission standards on diesel engine builders is likely to be minimal.

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