Effect of motor vehicle emissions on air quality of green urban community

In the context of the outbreak of coronavirus disease 2019 (COVID-19), strict lockdown policies were implemented to control nonessential human activities in Xi’an, northwest China, which greatly limited the spread of the pandemic and affected air quality. Compared with pre-lockdown, the air quality index and concentrations of PM2.5, PM10, SO2, and CO during the lockdown reduced, but the reductions were not very significant. NO2 levels exhibited the largest decrease (52%) during lockdown, owing to the remarkable decreased motor vehicle emissions. The highest K+ and lowest Ca2+ concentrations in PM2.5 samples could be attributed to the increase in household biomass fuel consumption in suburbs and rural areas around Xi’an and the decrease in human physical activities in Xi’an (e.g., human travel, vehicle emissions, construction activities), respectively, during the lockdown period. Secondary chemical reactions in the atmosphere increased in the lockdown period, as evidenced by the increased O3 level (increased by 160%) and OC/EC ratios in PM2.5 (increased by 26%), compared with pre-lockdown levels. The results, based on a natural experiment in this study, can be used as a reference for studying the formation and source of air pollution in Xi’an and provide evidence for establishing future long-term air pollution control policies.

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Analysis of motor vehicle emissions in a Houston tunnel during the Texas Air Quality Study 2000

Atmospheric Environment ◽

10.1016/j.atmosenv.2004.03.006 ◽

2004 ◽

Vol 38 (20) ◽

pp. 3363-3372 ◽

Cited By ~ 82

Author(s):

Gary R. McGaughey ◽

Nimish R. Desai ◽

David T. Allen ◽

Robert L. Seila ◽

William A. Lonneman ◽

...

Keyword(s):

Air Quality ◽

Vehicle Emissions ◽

Motor Vehicle ◽

Motor Vehicle Emissions ◽

Quality Study

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Air quality impacts of motor vehicle emissions in the south coast air basin: Current versus more stringent control scenario

Atmospheric Environment ◽

10.1016/j.atmosenv.2011.11.010 ◽

2012 ◽

Vol 47 ◽

pp. 236-240 ◽

Cited By ~ 5

Author(s):

Susan Collet ◽

Toru Kidokoro ◽

Yukihiro Sonoda ◽

Kristen Lohman ◽

Prakash Karamchandani ◽

...

Keyword(s):

Air Quality ◽

Vehicle Emissions ◽

Motor Vehicle ◽

South Coast ◽

The South ◽

Stringent Control ◽

Motor Vehicle Emissions ◽

South Coast Air Basin

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Estimasi Beban Pencemar Dari Emisi Kendaraan Bermotor di Ruas Jalan Kota Pekanbaru

Dinamika Lingkungan Indonesia ◽

10.31258/dli.1.2.p.71-79 ◽

2014 ◽

Vol 1 (2) ◽

pp. 71

Author(s):

Nurhadi Hodijah ◽

Bintal Amin ◽

Mubarak Mubarak

Keyword(s):

Air Quality ◽

Vehicle Emissions ◽

Motor Vehicle ◽

Ambient Air ◽

Motor Vehicles ◽

Vehicle Emission ◽

Pollutant Load ◽

Diesel Vehicles ◽

Motor Vehicle Emissions ◽

Pm 10

Increasing population and economy in Pekanbaru City was clearly followed by anincrease in the number of motor vehicles has the potential to cause air pollution andendanger human health. This research was aimed to analyze the pollutant load gases of CO,HC, NO 2 , SO 2 and PM 10 emissions from motor vehicles at at Pekanbaru City. Survey on thevolume of motor vehicles, roadside air quality and vehicle emission test was conducted onthree different road in Pekanbaru city. The volume of motor vehicles and pollutants loadsfrom motor vehicle emissions was highest at Sudirman road and the lowest at Diponegororoad. There are very significant differences between Sudirman road with Diponegoro roadand Tuanku Tambusai road with Diponegoro road. Higher pollutant load was found for gasCO (76,4 %), than gas HC (19,4 %), gas NO 2 (3,6 %), gas SO 2 (0,1 % ) and PM 10 ( 0,7 % ).The largest contribution of pollutant load gas CO, HC and PM 10 comes from motorcycles, gasNO 2 from the city cars and gas SO 2 coming from the truck. The quality of roadside air in thethird road to the gases CO, NO 2 , SO 2 and PM 10 are still below the ambient air qualitystandards, whilest gas HC had passed the ambient air quality standard. A positive correlationbetween concentrations of roadside air pollutants with a load of motor vehicle emissions wasfound. The percentage of motor vehicle emission test results explain that the rates of vehiclesfueled with gasoline were higher than diesel vehicles and that do not pass of the emission testwere generally produced before 2007, while for diesel vehicles that do not pass the emissionstest opacity value that were produced in the 2010 onward.

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Motivation and implementation of traffic management strategies to reduce motor vehicle emissions in Canadian cities

Canadian Journal of Civil Engineering ◽

10.1139/cjce-2017-0451 ◽

2018 ◽

Vol 45 (4) ◽

pp. 241-247 ◽

Cited By ~ 2

Author(s):

Alexander Y. Bigazzi ◽

Amr Mohamed

Keyword(s):

Air Quality ◽

Traffic Safety ◽

Traffic Management ◽

Vehicle Emissions ◽

Motor Vehicle ◽

Global Climate ◽

Management Strategies ◽

Road Pricing ◽

Provincial Government ◽

Motor Vehicle Emissions

There is a pressing need to reduce pollution emissions from transportation and consequent negative effects on air quality, public health, and the global climate. Diverse traffic management strategies have been proposed and undertaken with primary or secondary goals of reducing motor vehicle emissions. The objective of this paper is to investigate the motivation and implementation of traffic management strategies to reduce motor vehicle emissions, with a focus on moderate-scale local and regional strategies that are broadly applicable. Public documents from 44 local, regional, and provincial government entities across Canada were reviewed for information regarding the implementation of 22 traffic management strategies. Results show that different levels of government are involved in the implementation of different types of strategies, and with a different mix of traffic, safety, and environmental motivations. Regional governments more frequently cite environmental motivations and appear to be most interested in the two strategies with the strongest empirical evidence of air quality benefits: area road pricing and low emission zones. Strengthening regional transportation planning and better integrating it with municipal and provincial planning could potentially increase the implementation of effective sustainable traffic management strategies in Canada. Additional opportunities exist through emphasizing the potential environmental co-benefits of strategies such as road pricing, speed management, and traffic signal and intersection control improvements.

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