I wonder if that is per gallon of fuel used or per mile driven. Depending on which one it is, it can make a big difference.
Greg H. ----- Original Message ----- From: "Keith Addison" <[EMAIL PROTECTED]> To: <biofuel@sustainablelists.org> Sent: Friday, December 23, 2005 1:40 Subject: [Biofuel] Motorbikes '16 times worse than cars for pollution' > http://www.guardian.co.uk/climatechange/story/0,12374,1671722,00.html > Guardian Unlimited | Special reports | > > Motorbikes '16 times worse than cars for pollution' > > Ian Sample, science correspondent > Wednesday December 21, 2005 > The Guardian > > Motorbikes are churning out more pollution than cars, even though > they make up only a small fraction of vehicles on the roads, > according to a report. > > Tests on a selection of modern motorbikes and private cars revealed > that rather than being more environmentally-friendly, motorbikes emit > 16 times the amount of hydrocarbons, including greenhouse gases, > three times the carbon monoxide and a "disproportionately high" > amount of other pollutants, compared to cars. Ana-Marija Vasic at the > Swiss Federal Laboratories for Materials Testing and Research, who > led the research, said the need to legislate on emissions from > motorbikes has been overlooked because there are so few on the roads. > The oversight has lead to a paucity of research into ways of making > their engines run more cleanly. > > In Britain, there are 1,060,000 motorbikes on the road but more than > 25m private cars. > > Dr Vasic's tests showed that, especially in urban traffic, when > motorcyclists frequently accelerated quickly, motorbike engines > burned fuel inefficiently, giving a sharp peak in emissions. The > yearly hydrocarbon emissions of the average two-wheeler in urban > traffic measured up to 49 times higher than that of the average car, > according to the study, due to be published in the journal > Environmental Science and Technology. > > "The importance of [motorbike] emissions has been underestimated in > legislation, giving manufacturers little motivation to improve > aftertreatment systems," said Dr Vasic. The tests were carried out on > a variety of Yamaha, Piaggio and Honda 50cc scooters and Suzuki, > Honda and BMW motorbikes with engine sizes ranging from 800cc to > 1150cc. > > _______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
