4Behrentz E,Ling R,Rieger P, et al.Measurements of nitrous oxide emissions from light-duty motor vehicles: a pilot study. Atmospheric Environment . 2004
5Margiotta R A.Improved vehicle speed estimation proceduresfor air quality and planning application. . 1996
6Fleet characterization data for mobile6:development and use of agedistributions,average annual mileageaccumulation rates,and projected vehicles counts for useinmo-bile6. EPA420-R-01-04 . 2001
7Determination of running emissions as afunction of mileage for 1981-1993 model year light-duty carsand trucks. EPA420-99-010 . 1999
8User‘s guide to mobile6.1 and mobile6.2:mobile source emission factor model. EPA420-02-028 . 2002
