New Jersey chooses clean diesel buses

WASHINGTON, DC—This week’s $395 million agreement for the purchase of 772 clean diesel commuter coaches by New Jersey Transit – America’s third largest provider of bus, rail and light rail transit – is yet another example of major transit agencies recognizing the economic, safety and environmental benefits of advanced clean diesel technology, said Allen Schaeffer, the Executive Director of the Diesel Technology Forum.
“Through this acquisition of the latest clean diesel technology, New Jersey Transit has made a substantial investment in clean transportation technology that will ensure affordable, efficient, clean and reliable public transportation services for the citizens of New Jersey. These buses will also play a key role toward improving air quality in the region through gains in ridership and also the environmental performance of these new coaches as they are put in service,” said Schaeffer.
New Jersey’s coach fleet is among the largest in North America, so this acquisition is a strong statement about the value and benefits of new clean diesel technology in a competitive green technology space. With an array of fuel and technology options, New Jersey Transit selected coaches powered by clean diesel engines for its growing services to outlying cities and suburban areas.
The six-year delivery schedule for the 772 new Commuter Coaches is scheduled to begin in 2016.
“Businesses and governments are increasingly finding that thanks to the tremendous environmental progress made on diesel engines, they can improve their environmental performance without the higher acquisition, facility and fueling station investments required for alternative fuels like natural gas,” Schaeffer said.
Among public transit agencies, Schaeffer said, diesel and diesel-hybrid buses account for about 75 percent of the national fleet.
According to research commissioned by the Diesel Technology Forum, just under 41,000 heavy duty vehicles in operation throughout New Jersey come with an engine that meets the strictest U.S. EPA emissions standards set beginning with model year 2010 and have eliminated 300,000 tons of NOx – an ozone precursor – while saving 14.2 million gallons of fuel and reducing 150,000 tons of carbon emissions.
Diesel power systems have been undergoing revolutionary technological advancements that have already achieved dramatic reductions in emissions for urban buses and highway engines. Advances in emissions-control systems and ultra-low sulfur diesel fuel (ULSD), biodiesel and renewable diesel are helping clean diesel engines achieve emissions performance equivalent to compressed natural gas (CNG) and other alternatives.
Schaeffer said an analysis by the Clean Air Task Force illustrated the major emissions gains clean diesel buses have achieved. The analysis shows the air quality benefits of replacing older buses with newer clean diesel technology and a comparison of clean diesel and CNG buses.
2012 Clean Diesel Bus & 2012 CNG Bus Emissions Comparison (Vs. Model Year 2000 Diesel Bus)

Vs. 2000 Diesel





2012 Clean Diesel




2012 CNG




(Source: Clean Air Task Force – “Clean Diesel versus CNG Buses: Cost, Air Quality & Climate Impacts”)