Saturday, June 16, 2007
New Rules Concerning School Bus Emissions
New laws state that excessive idling in front of schools will be stopped because of the harmful effects of exhaust gases on children. School bus operators will now have to shutdown the engine when waiting for students.
Unnecessary school bus idling pollutes the air, wastes fuel, and causes excess engine wear. When idling, a typical school bus engine burns approximately half a gallon of fuel per hour. School districts that eliminate unnecessary idling can save significant dollars in fuel costs each year.
Diesel bus exhaust from excessive idling can be a health concern. School bus manufacturers also are making large investments in new diesel, natural-gas, electric hybrid and other engines to further reduce pollution. The National Idle-Reduction Campaign: Provides an opportunity for bus drivers, transportation managers, teachers, and children to learn about air quality and diesel emissions. A bus can burn approximately one gallon of diesel fuel for each hour it idles. Planning bus routes to minimize the time students spend on the bus minimizes those students' exposure to diesel emissions.
As older buses are replaced with newer, cleaner-burning ones, they will further reduce our air pollution while improving fuel efficiency. Model year 2007 school buses are 60 times cleaner than those built before 1990, and, as older buses are replaced with newer, cleaner burning ones, they will further reduce our pollution and fuel usage. Myth: It’s better to just leave the engine idling because a "cold start" produces more pollution. Recent studies have found that pollution can concentrate inside school buses, leading to even higher exposures for children who ride buses. Luckily, today’s cleaner fuels and pollution controls for diesel vehicles can dramatically cut pollution from school buses. Nationally, soot pollution from school buses has been reduced more than two percent through local, state, and federal actions.