mobile6 2 air toxic emission factor modeling a trend and sensitivity analysis tianjia tang michael claggett joon byun mike roberts jessica granell resource center federal highway administration 10 south howard street suite 4000 baltimore md 21201 fhwa dot gov dale e aspy us environmental protection agency region 4 61 forsyth sw atlanta ga 30303 3104 epamail epa abstract on january 29 2002 the officially released motor vehicle program for oxides of nitrogen nox carbon monoxide co volatile organic compounds voc since then an updated version known as has been with particulate matter capabilities release various entities have started using s function series test runs were performed in study presented here to gain better understanding overall model behavior these scenarios evaluated changes factors six built into module that resulted from relevant input variables included parameters related activities such
