Posted on 17-6-2004
Clearing
the Air With Hybrid Buses
By Fred Durso, Jr.
The soot spewing from the exhaust pipes of diesel buses doesn’t
just look dirty, it is dirty, accounting for 20 percent of U.S.
air pollution, says the Natural Resources Defense Council. Some
forward-thinking transit agencies are fighting back with hybrid
diesel-electric buses. New York City Transit (NYCT), for example,
took the lead and purchased 10 prototype hybrid buses in 1998,
helping clear the air in a metropolis with very poor air quality.
A Department of Energy (DOE) study reports that hybrid buses,
combining a diesel engine with an electric motor, outperform
regular diesel buses in a variety of categories, offering 10
percent higher fuel economy, 19 percent lower carbon dioxide
emissions and a 97 percent reduction in carbon monoxide emissions.
“The days of the dirty diesel bus are numbered,”
says Dan Becker, director of Sierra Club’s Global Warming
and Energy Program. “The federal Clean Air Act requires
states to reduce soot and smog emissions, and hybrids are a
good way to do this.”
Buoyed by the success of the prototypes, NYCT has ordered an
additional 325 diesel-electric buses. Other states are following
suit, including Washington, where Seattle’s King County
Metropolitan Transit Authority recently purchased 235 diesel
hybrid buses. New Jersey Transit, the nation’s largest
statewide public transportation system, has used $8.5 million
in federal funds to buy seven hybrid buses. Connecticut, Minnesota
and Toronto, Canada are also buying hybrids.
“Like anything else, it takes time to get this new technology
into the marketplace,” explains John Powell, executive
director of the Advanced Transportation Technology Institute.
Powell sees the dual-fueled hybrids as the optimal choice with
the most benefits. “Hybrids have an advantage over single-fueled
vehicles,” says Powell. “A good hybrid can provide
economic benefits regardless of the fuel you’re using.”
Transit passengers and environmental activists can get active
to increase the number of cleaner buses on America’s roadways.
“We need to pressure city councils and administrative
agencies to purchase cleaner alternatives,” says Becker.
“Bus manufacturers aren’t falling over themselves
to promote more eco-friendly buses.”
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