TY - JOUR
T1 - I/M effectiveness as directly measured by ambient CO data
AU - Scherrer, Huel C.
AU - Kittelson, David B
PY - 1994
Y1 - 1994
N2 - The effectiveness of a centralized Inspection/Maintenance (I/M) program, implemented in a major U.S. metropolitan area in 1991, is directly measured through ambient CO monitor data. A multi-factoral analysis is developed which quantifies effects due to the interaction of hourly traffic levels with wind vector and ambient temperature conditions, allowing a better measure of I/M effectiveness. The time-trend of the measured CO levels is seen to closely match those predicted by the analysis throughout the 7 year study period. An average ambient CO reduction of 1.3 ± 1.4 percent attributable to I/M is measured, with individual results of +1.5 percent, +5.8 percent, and-3.4 percent obtained for the three monitor locations studied.
AB - The effectiveness of a centralized Inspection/Maintenance (I/M) program, implemented in a major U.S. metropolitan area in 1991, is directly measured through ambient CO monitor data. A multi-factoral analysis is developed which quantifies effects due to the interaction of hourly traffic levels with wind vector and ambient temperature conditions, allowing a better measure of I/M effectiveness. The time-trend of the measured CO levels is seen to closely match those predicted by the analysis throughout the 7 year study period. An average ambient CO reduction of 1.3 ± 1.4 percent attributable to I/M is measured, with individual results of +1.5 percent, +5.8 percent, and-3.4 percent obtained for the three monitor locations studied.
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U2 - 10.4271/940302
DO - 10.4271/940302
M3 - Conference article
AN - SCOPUS:85072444013
SN - 0148-7191
JO - SAE Technical Papers
JF - SAE Technical Papers
T2 - 1994 SAE International Congress and Exposition
Y2 - 28 February 1994 through 3 March 1994
ER -