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THE NATIONAL CLEAN BUS
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2003 Clean Bus
Leaders
Pierce Transit Agency,
Tacoma
,
WA
Pierce
Transit Agency in
Tacoma
,
Washington
has been operating natural gas buses for seventeen years and is
one of the most experienced clean bus operators in the
United States
. In 1986, dedicated natural gas bus engines were not available,
so the transit agency was forced to use fairly crude technology to
take advantage of the cleaner-burning fuel. In 1991, the transit
agency finally partnered with Cummins Engine Company to develop
one of the first dedicated natural gas engine models. These make
up 75 percent of the current fleet, which should be powered 100
percent by natural gas in the next few years. The Department of
Energy presented the transit agency a Clean Cities National
Partner Award in 1999 for leadership in promoting the use of
alternative fuels.
City of
New Haven
and
the Greater New Haven Clean Cities Coalition
On
August 12, 1998
, at the request of Mayor John De Stefano, Jr., the City of New
Haven, Connecticut, in conjunction with the Greater New Haven
Clean Cities Coalition and the Greater New Haven Transit District,
began the process to procure an electric bus trolley fleet for
downtown
New Haven
. The city experiences high levels of asthma, especially among
children, and has been designated by the Environmental Protection
Agency as part of a non-attainment area for ground level ozone and
particulate matter (PM-10). With federal funding support, the city
took ownership in 2002 of four 22-foot electric trolley replicas
to provide free, zero-emission transportation to local citizens.
The Greater New Haven Clean Cities Coalition is exploring the
option to expand upon this success and further deploy
hybrid-electric or fuel cell buses in the area. Fleets of
dedicated electric buses are in operation across the country,
including those in
Santa Barbara
,
CA
;
Chattanooga
,
TN
; and
Miami Beach
,
FL.
Las Vegas
Regional Clean Cities Coalition, Las Vegas, Nevada
The
Las Vegas Regional Clean Cities Coalition has been deeply involved
in the procurement of alternative fueled vehicles in the region,
and worked to establish the largest biodiesel school bus fleet in
the world. In 2002,
Clark
County
School District
, a member of the coalition, began using biodiesel in its more
than 1,200 buses to reduce harmful emissions. The biodiesel is
produced locally using frying oil taken from local hotels and
casinos. Children are among the most susceptible to
diesel-particulate emissions, and have been shown to be at higher
risk of contracting pulmonary diseases like asthma while riding in
diesel-powered buses. The coalition has also been active in the
procurement of a clean bus fleet to be operated by the Regional
Transportation Commission (RTC), another coalition member. Two
years ago Citizens Area Transit, the public transit agency
operated by RTC, was mostly diesel-powered. Since then 9 CNG buses
have been put into operation and 48 more are on order. In the next
five years RTC expects to purchase up to 600 more buses, but is
dedicated to the adoption of low emission fuels and technologies.
SunLine Transit Agency, Thousand
Palms, CA
SunLine
Transit Agency has been a consistent national leader in the use of
cleaner burning fuels since 1994. At that time, the diesel-powered
bus fleet was switched virtually overnight to a 100 percent
natural gas-powered fleet, making SunLine the first public transit
agency to dedicate its fleet to cleaner burning natural gas and
also the first to do so with such rapid action. The transit agency
continues to lead in the use of other fuels as well, including
hydrogen. In November of 2002, SunLine began operation of a fuel
cell bus and made it the first ever to operate in revenue service.
The hydrogen fuel for the bus is produced on-site using renewable
wind and solar electricity and produces no harmful emissions from
the tailpipe.
MTA New York City Transit, New York City, New York
New
York City Transit has been a leader in the development of
hybrid-electric buses since 1998, setting out to design, build,
test and operate in revenue service one of the nation’s largest
hybrid-electric bus fleets. By mid-2000, ten Orion VI
hybrid-electric buses were in revenue service in
New York City
. The demonstration of these buses led to the development of a
newer, cleaner diesel hybrid-electric bus model to be delivered in
the fall of 2003. Testing has shown significant reductions in
hydrocarbon, carbon monoxide, particulate matter and nitrogen
oxide emissions in addition to improved fuel economy. By 2006 the
transit fleet will consist of 385 diesel hybrid-electric buses and
646 compressed natural gas buses, bringing its combined clean bus
total to 1,031 or 24 percent of the entire fleet.
Chattanooga Area Regional Transportation Authority,
Chattanooga, Tennessee
Since
1992, the Chattanooga Area Regional Transportation Authority (CARTA)
has been operating pollution-free electric buses on two routes
serving the downtown
Chattanooga
area. The buses have been extremely well-received by the community
and have saved 8 to 10 percent on maintenance costs while
improving the city’s air quality. Parking fees collected from
two city parking garages fund operation of the buses, allowing the
city to offer rides along the two downtown routes for free. Demand
for electric buses in
Chattanooga
spurred the creation of two independent entities, Advanced Vehicle
Systems (AVS) and the Advanced Transportation Technology Institute
(ATVI, formerly the Electric Transit Vehicle Institute). AVS was
initially founded to fill
Chattanooga
’s order for 12 electric buses in 1992, but has since grown to
satisfy electric bus orders from domestic and international
customers. ATVI is a non-profit organization educating the public
about the benefits of electric propulsion technologies and
publishes the monthly newsletter Clean Fuel Solutions. CARTA has contributed to the development of
clean electric and hybrid-electric buses, and through its
dedication to clean bus technologies remains a national leader.
Five Seasons Transportation and Parking,
Cedar
Rapids
,
IA
Five Seasons
Transportation and Parking (FST&P) has run the gamut as far as
clean buses are concerned. The average age of the current bus in
the fleet is 25 years, but Director Bill Hoekstra has used a
combination of fuels and technologies to make them operate as
cleanly as buses leaving today’s production lines.
The transit agency started by modifying the tailpipes of
the bus fleet to point them skyward, redirecting noxious gases
from the breathing level of local patrons. Then in 1986 a local
manufacturer of emissions control technology partnered with FST&P
to install fuel and emissions control technology on the fleet
using federal funding. In 1993, the transit agency partnered with
the Iowa Soybean Board to use B20, a biodiesel fuel mixture. B5
and B10 are now regularly used in the bus fleet to lower emissions
and improve engine lubricity. In the mid-1990’s Five Seasons
also partnered with a local utility company, Westinghouse and
Bluebird to demonstrate a small fleet of hybrid-electric and
electric-powered buses. Eighty percent of these buses are still in
operation. The use of creative alternatives has proven key to Five
Seasons’ clean bus success.
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