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A Comparison of Light-duty Vehicles' High Emitters Fractions Obtained from an Emission Remote Sensing Campaign and Emission Inspection Program for Policy Recommendation by Amin Hassani; Seyed Reza Safavi; Vahid Hosseini is a Environmental Science article available to read on EtoBox.

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Urban transportation is one of the leading causes of air pollution in big cities. In-use emissions of vehicles are higher than the emission control certification levels. The current study uses a roadside remote sensing emission monitoring campaign to investigate (a) fraction of high emitters in the light-duty vehicle (LDV) fleet and their contributions to the total emissions, (b) emission inspection (I/M) programs' effectiveness, and (c) alternate fuel (natural gas) encouragement policy. LDVs consist of passenger or freight transport vehicles with four wheels equivalent to classes M1 and N1 of European union vehicle classifications. The motivation is to assess the current emission inspection program's success rate and study the impact of the increased natural gas vehicle market share policy. It is also meant to present and validate remote sensing as a possible backup method to the current I/M program. The emission remote sensing campaign was conducted to measure emissions of CO, HC, and NO of the LDV fleet. Fleet age, engine size, and fuel type (gasoline or natural gas) were extracted and correlated with emissions. It was found that CO and HC emissions are five times higher for car

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Author

Amin Hassani; Seyed Reza Safavi; Vahid Hosseini

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Environmental Science (Physical Sciences)