Abstract: Bus operators in the USA are increasingly switching to ultra low sulphur diesel. Biodiesel is being introduced in a growing number of fleets. Approximately 7.5% of America's transit buses run on compressed natural gas (CNG), which reduces pollution but not costs. Maintenance costs are typically 15-20% higher for CNG than diesel. Significant users of CNG buses include Los Angeles Metro and Orange County. Hybrid buses, e.g. the Orion VII from DaimlerChrysler, are being introduced by New York City Transit, San Francisco Muni and Toronto Transit Commission. The Orion VII is powered by BAE Systems' HybriDrive technology that reduces emissions and is claimed to be more fuel-efficient than alternatives. Hybrid buses from General Motors are also being introduced in cities in North America. Users of the GM hybrid include Gillig and New Flyer. Hybrid buses have proved to be reliable, with improved fuel economy and lower emissions than diesel-powered vehicles.
Publication Year: 2006
Publication Date: 2006-06-23
Language: en
Type: article
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