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Children's Exposures to Diesel Exhaust

Full text of report
Summary of Findings
Press Release

Resulting Legislation

An Act Concerning the Idling of School Buses


In the United States nearly 600,000 school buses transport 24 million students to school daily. Each year buses travel 4.3 billion miles as children take nearly 10 billion school bus rides. In Connecticut, 387,000 students ride to school each day on 6,100 buses. Most U.S. school buses are powered by diesel fuel. Diesel exhaust is comprised of very fine particles of carbon and a mixture of toxic gases. Federal agencies have classified diesel exhaust as a probable human carcinogen. Benzene, an important component of the fuel and exhaust, is designated to be a known human carcinogen. This study concludes that the laws intended to control air pollution in the U.S. and Connecticut must be strengthened to protect the health of children.

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