ECOLOGY ECONOMY ? - USA - DIESEL buses best RTD choice
Denver,CO,USA - Denver Post - December 14, 2004 -- Taxpayers would have to pay $89 million more in initial outlays to put those CNG vehicles on the road,... A CNG fleet would more than double pollutants in two of the four categories regulated by the U.S. Environmental Protection Agency....The current "clean diesel" is fairly low in sulphur but is only an interim fuel. While it is much cleaner than the higher-sulphur fuels it replaced, federal regulations require new ultra-low sulphur fuels in mid-2006.... Thus, by the end of 2006, the new diesels will be much cleaner than their CNG rivals in hydrocarbon, carbon monoxide and particulate matter emissions, and basically tied in nitrous oxides. As a bonus, federal tests show the diesel buses are slightly quieter than their natural gas rivals.
posted by Unknown @ 11:29 AM
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