School bus emissions study to be released

June 25, 2007 at 3:54 PM   |   0 comments

WASHINGTON, June 25 (UPI) -- A U.S. government study suggested anti-idling advocates are on the right track in an ongoing debate concerning school bus exhaust emissions.

Many regulatory agencies and school districts limit the idling of school buses while students enter or leave the vehicles, thereby restricting children's exposure to airborne diesel pollutants.

But concerns remained whether stopping and then restarting school bus engines might result in higher emissions of diesel pollutants than occur during continuous idling.

In the new study by John Kinsey and colleagues at the U. S. Environmental Protection Agency, diesel emissions from a limited number of school buses under both scenarios were measured. The researchers concluded restarting buses results in fewer emissions, so long as the vehicles depart quickly without any extended period of idling.

The study is to be published in the July 15 issue of the journal Environmental Science & Technology.

© 2007 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.
Trending News
Join the conversation
Most Popular
Photos
Video
x
Feedback