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I have adult-onset asthma and must drive the roads and highways of
California every day. I am especially concerned about the level of
diesel exhaust pollution in the Bay Area and the Central Valley. I
experience adverse effects when traveling in heavy traffic or
behind a diesel truck.

I am writing to express my deep concern about the negative health
impacts of diesel pollution from trucks and buses and I urge the
California Air Resources Board to adopt the strongest regulation
possible to clean up the top sources of diesel particulate matter
in California. California has the worst air quality in the nation
and trucks and buses are a major contributor to the particulate
matter and ozone pollution that causes serious health consequences.
Pollution from trucks and buses result in an estimated 4,500
premature deaths and 71,000 cases of asthma and lower respiratory
symptoms each year. Equally important, truck drivers are 1.5 to 2
times as likely as workers not exposed to diesel exhaust to develop
lung cancer during their lives. 

To protect the health of all Californians, I urge the California
Air Resources Board to adopt the strongest possible diesel truck
regulations.