1 Department of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran

2 Department of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran


BACKGROUND AND OBJECTIVES: This research attempted to analyze the negative and positive aspects of Coronavirus: its effect on air quality and traffic volume. The sample city of this research was Tehran and transportation behavior toward the Coronavirus and minor quarantines in specific.
METHODS: Six indices were considered for Tehran city in two consecutive years (in quarantine period): carbon mono-oxide, nitrogen dioxide, sulfur dioxide, particulate matters, air quality index, and daily traffic volume, which depart from Tehran city to other destinations. Daily traffic volume changes were examined for four roads separately, and total departed trips were also investigated. This comparison was made graphically and statistically by using the regression model and one-way t-test.
FINDING: Results showed that from 20th February to 19th March, the average of produced CO, NO2, and PM10 decreased in 2020 compared to 2019, but other indices related to air pollution were increased in 2020. The average daily traffic in existing roads of Tehran City was declined significantly in 2020. Regression models and a one-way t-test showed that the growth rate of emission production was higher in 2019 compared to 2020. Also, this rate for daily traffic volume was higher from March 20 to April 19 of 2020 compared to 2020.
CONCLUSION: The regression model on indices showed valuable results. For instance, the O3 emission slope in the second month reduced from 0.6 to 0.5; however, the exiting traffic of Tehran city reduced by 47 percent that indicates the higher resident population of Tehran city compare to the last year.


Main Subjects

Abdi, M., (2020). Coronavirus disease 2019 (COVID-19) outbreak in Iran: Actions and problems. Infect. Con. Hosp. Epid., 41(6): 754-755 (2 pages).

Ahmadi, M.; Sharifi, A.; Dorosti, S.; Ghoushchi, S.J.; Ghanbari, N., (2020). Investigation of effective climatology parameters on COVID-19 outbreak in Iran. Sci. Total Environ., 729: 138705 (7 pages).

Amlashi, F.I.; Gilani, N.; Besharat, S., (2020). Does local or national quarantine may save more lives in Iran during COVID-19 Epidemic? Iran J. Public Health., 49: 125-126 (2 pages).

AQMS, (2020). Air Pollution Monitoring System Online.

Bao, R.; Zhang, A., (2020). Does lockdown reduce air pollution? Evidence from 44 cities in northern China. Sci. Total Environ., 731: 139052 (12 pages).

Behzadifar, M.; Ghanbari, M.K.; Bakhtiari, A.; Behzadifar, M.; Bragazzi, N.L., (2020). Ensuring adequate health financing to prevent and control the COVID-19 in Iran. Int. J. Eq. Health., 19: 1-4 (4 pages).

Caraka, R.E.; Lee, Y.; Kurniawan, R.; Herliansyah, R.; Kaban, P.A.; Nasutation, B.I.; Gio, P.U.; Chen, R.C.; Toharudin, T.; Pardamean, B., (2020). Impact of COVID-19 large scale restriction on environment and economy in Indonesia. Global J. Environ. Sci. Manage., 6(SI): 65-84 (20 pages).

Dantas, G.; Siciliano, B.; Franca, B.B.; Silva, C.M.D.; Arbilla, G., (2020). The impact of COVID-19 partial lockdown on the air quality of the city of Rio de Janeiro, Brazil. Sci. Tot. Environ., 729: 139085 (10 pages).

Edrisi, A.; Askari, M., (2020). Multi-objective location model of earthquake shelters. Int. J. Hum. Capital Urban Manage, 5(1): 19-26 (8 pages).

Glanz, J.; Carey, B.; Holder, J.; Watkins, D.; Valentino-DeVries, J.; Rojas, R.; Leather, L., (2020). Where America didn't stay home even as the virus spread. The New York Times.

Gupta, N.; Tomar, A.; Kumar, V., (2020). The effect of COVID-19 lockdown on the air environment in India. Global J. Environ. Sci. Manage., 6(SI): 31-40 (10 pages).

Haas, M.D.; Faber, R.; Hamersma, M., (2020). How COVID-19 and the Dutch' intelligent lockdown' change activities, work and travel behaviour: Evidence from longitudinal data in the Netherlands. Transp. Res Interdiscip. Perspectives, 6: 100150 (11 pages).

Haghani, M.; Bliemer, M.C.J.; Goerlandt, F.; Li, J., (2020). The scientific literature on Coronaviruses, COVID-19 and its associated safety-related research dimensions: A scientometric analysis and scoping review. Safety Sci., 129: 104806 (18 pages).

Hadian, M.; Raeissi, P.; Khalilabad, T.H., (2020). The economic burden of mortality and morbidity due to air pollution in Tehran, Iran: a systematic review. Air Qual. Atmos. Hlth., 13: 1001-1011 (11 pages).

Heger, M.; Sarraf, M., (2018). Air Pollution in Tehran: Health Costs, Sources, and Policies. Environment and Natural Resources Global Practice Discussion Paper; No. 6. World Bank, Washington, DC., World Bank (38 pages).

Hosseini, V.; Shahbazi, H., (2016). Urban Air Pollution in Iran. Iran Stud. UK, 49(6): 1029-1046 (18 pages).

Isaifan, R.J., (2020). The dramatic impact of Coronavirus outbreak on air quality: Has it saved as much as it has killed so far? Global J. Environ. Sci. Manage., 6(3): 275-288 (14 pages).

Kerimray, A.; Baimatova, N.; Ibragimova, O.P.; Bukenov, B.; Kenessov, B.; Plotitisyn, P.; Karaca, F., (2020). Assessing air quality changes in large cities during COVID-19 lockdowns: The impacts of traffic-free urban conditions in Almaty, Kazakhstan. Sci. Total Environ., 730: 139179 (8 pages).

Lee, W.C.; Ong, C.Y., (2020). Overview of rapid mitigating strategies in Singapore during the COVID-19 pandemic. Publ. Health, 185: 15-17 (3 pages).

Li, J.; Nguyen, T.H.H.; Coca-Stefaniak, J.A., (2020a). Coronavirus impacts on post-pandemic planned travel behaviours. Ann. Tourism Res., (6 pages).

Li, R.; Azari, M.; Wang, Y.; Zhang, X.; Liu, Z.; Zhu, Y.; Zhang, K.; Xue, S.; Ooi, M.C.G.; Zhang, D.; Chan, A., (2020b). Air quality changes during the COVID-19 lockdown over the Yangtze River Delta Region: An insight into the impact of human activity pattern changes on air pollution variation. Sci. Total Environ., 732: 139282 (11 pages).

Maghmoumi, A.; Marashi, F.; Houshfar, E., (2020). Environmental and economic assessment of sustainable municipal solid waste management strategies in Iran. Sustainable Cities Soc., 59: 102161 (7 pages).

Mahato, S.; Pal, S.; Ghosh, K.G., (2020). Effect of lockdown amid COVID-19 pandemic on air quality of the megacity Delhi, India. Sci. Total Environ., 730: 139086 (23 pages).

Masum, M.H.; Pal., S.K., (2020). Statistical evaluation of selected air quality parameters influenced by COVID-19 lockdown. Global J. Environ. Sci. Manage., 6(SI): 85-94 (10 pages).

Nourzadeh, D.; Mortazavi, P.; Ghalandarzadeh, A.; Takada, S.; Ahmadi, M., (2019). Performance assessment of the Greater Tehran Area buried gas distribution pipeline network under liquefaction. Soil Dyn. Earth. Eng., 124: 16-34 (19 pages).

Nunes, A.; Hernandez, K.D., (2020). Autonomous taxis & public health: High cost or high opportunity cost? Transport. Res. A-Pol., 138: 28-36 (9 pages).

Otmani, A.; Benchrif, A.; Tahri, M.; Bounakhla, M.; Chakir, E.M.; Bouch, M.E.; Krombi, M., (2020). Impact of Covid-19 lockdown on PM10, SO2 and NO2 concentrations in Salé City (Morocco). Sci. Total Environ., 735: 139541 (5 pages).

Quéré, C.L.; Jackson, R.B.; Jones, M.W.; Smith, A.J.P.; Abernethy, S.; Andrew, R.M.; De-Gol, A.J.; Willis, D.R.; Shan, Y.; Canadell, J.G.; Friedlingstein, P.; Creutzig, F.; Peters, G.P., (2020). Temporary reduction in daily global CO2 emissions during the COVID-19 forced confinement. Nat. Climate Change (8 pages).

RMTO, (2020) Road Maintenance and Transportation Organization.

Rojas-Rueda, D.; Nazelle, A.D.; Teixido, O.; Nieuwenhuijsen, M.J., (2012). Replacing car trips by increasing bike and public transport in the greater Barcelona metropolitan area: A health impact assessment study. Environ. Int., 49: 100-109 (10 pages).

Sharma, S.; Zhang, M.; Anshika, Gao, J.; Zhang, H.; Kota, S.H., (2020). Effect of restricted emissions during COVID-19 on air quality in India. Sci. Total Environ., 728: 138878 (8 pages).

Sicard, P.; Marco, A.D.; Agathokleous, E.; Feng, Z.; Xu, X.; Paoletti, E.; Rodriguez, J.J.D.; Calatayud, V., (2020). Amplified ozone pollution in cities during the COVID-19 lockdown. Sci. Total Environ., 735: 139542 (10 pages).

Shaver, K., (2020). As coronavirus precautions take hold, large US cities see rush hour traffic jams vanish.

Tehran Times, (2019) Air pollution responsible for over 4,000 deaths annually in Tehran.

Tran, T.T.; Pham, L.T.; Ngo, Q.X., (2020). Forecasting epidemic spread of SARS-CoV-2 using ARIMA model (Case study: Iran). Global J. Environ. Sci. Manage., 6(SI): 1-10 (10 pages).

Vafa-Arani, H.; Jahani, S.; Dashti, H.; Heydari, J.; Moazen, S., (2014). A system dynamics modeling for urban air pollution: A case study of Tehran, Iran. Transport. Res. D-tr. E., 31: 21-36 (16 pages).

Vahdati, S.S.; GhafarZad, A.; Rahmani, F.; Panahi, F.; Rad, A.O., (2014). Patterns of road traffic accidents in North West of Iran during 2013 New Year Holidays: complications and casualties. Bull. Emergency Trauma, 2(2): 82 (4 pages).

Wadud, Z.; Waitz, I.A., (2011). Comparison of Air Quality–Related Mortality Impacts of Different Transportation Modes in the United States. Transport. Res. Rec., 2233(1): 99-109 (11 pages).

Worldometers (2020). COVID-19 Coronavirus Pandemic.


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