Higher diesel price is associated with lower level of pollution: Evidence from Vietnam

Trinh Manh Hung; Hieu K.T. Ngo; Ly M.T. Luong; Hong H.T.C. Le; Dung Phung; Pham Minh Chinh; Son Nghiem; Nguyen T. Hue; Phong K. Thai

doi:10.1016/j.jclepro.2022.132245

Higher diesel price is associated with lower level of pollution: Evidence from Vietnam

Trinh Manh Hung, Hieu K.T. Ngo, Ly M.T. Luong, Hong H.T.C. Le, Dung Phung, Pham Minh Chinh, Son Nghiem, Nguyen T. Hue, Phong K. Thai^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Controlling and reducing PM_2.5 levels are essential, but among many studies on this topic only a few have focused on assessing the effectiveness of air pollution control policies through fuel prices. This study aims to investigate the association between higher fuel prices and PM_2.5 concentrations in Vietnam. Daily data on PM_2.5 in the two largest cities of Vietnam (Hanoi and Ho Chi Minh City) and prices of different fuels were collected for two years (2016–2017). A linear regression model was performed to evaluate the association between PM_2.5 and fuel prices, including lag effects for up to ten days. The long term and seasonal effects on PM_2.5 were controlled using a natural cubic spline function of time with three degrees of freedom per year. For every 1,000 VND increase in the price of diesel, there was a decrease of 2.7% (95% CI: −8.0, 2.7) and 13.4% (95%CI: −22.3, −4.5) in PM_2.5 in Ho Chi Minh City and Hanoi, respectively. On the contrary, there was no statistically significant association between gasoline prices (both RON-95 and RON-92) and PM_2.5 in both Ho Chi Minh City and Hanoi. These findings provided evidence that changes in the price of the more polluting fuel (diesel) could significantly impact the level of PM_2.5 in the large cities of Vietnam. Our study offers valuable perspectives for policymakers to formulate environmental policies regarding different fuel excises.

Original language	English
Article number	132245
Journal	Journal of Cleaner Production
Volume	361
DOIs	https://doi.org/10.1016/j.jclepro.2022.132245
Publication status	Published - 10 Aug 2022

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@article{4821e00c90d44d508306535425269767,

title = "Higher diesel price is associated with lower level of pollution: Evidence from Vietnam",

abstract = "Controlling and reducing PM2.5 levels are essential, but among many studies on this topic only a few have focused on assessing the effectiveness of air pollution control policies through fuel prices. This study aims to investigate the association between higher fuel prices and PM2.5 concentrations in Vietnam. Daily data on PM2.5 in the two largest cities of Vietnam (Hanoi and Ho Chi Minh City) and prices of different fuels were collected for two years (2016–2017). A linear regression model was performed to evaluate the association between PM2.5 and fuel prices, including lag effects for up to ten days. The long term and seasonal effects on PM2.5 were controlled using a natural cubic spline function of time with three degrees of freedom per year. For every 1,000 VND increase in the price of diesel, there was a decrease of 2.7% (95% CI: −8.0, 2.7) and 13.4% (95%CI: −22.3, −4.5) in PM2.5 in Ho Chi Minh City and Hanoi, respectively. On the contrary, there was no statistically significant association between gasoline prices (both RON-95 and RON-92) and PM2.5 in both Ho Chi Minh City and Hanoi. These findings provided evidence that changes in the price of the more polluting fuel (diesel) could significantly impact the level of PM2.5 in the large cities of Vietnam. Our study offers valuable perspectives for policymakers to formulate environmental policies regarding different fuel excises.",

keywords = "Air pollution, Diesel, Exhaust emission, Fuel prices, PM",

author = "Hung, {Trinh Manh} and Ngo, {Hieu K.T.} and Luong, {Ly M.T.} and Le, {Hong H.T.C.} and Dung Phung and Chinh, {Pham Minh} and Son Nghiem and Hue, {Nguyen T.} and Thai, {Phong K.}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = aug,

day = "10",

doi = "10.1016/j.jclepro.2022.132245",

language = "English",

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journal = "Journal of Cleaner Production",

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TY - JOUR

T1 - Higher diesel price is associated with lower level of pollution

T2 - Evidence from Vietnam

AU - Hung, Trinh Manh

AU - Ngo, Hieu K.T.

AU - Luong, Ly M.T.

AU - Le, Hong H.T.C.

AU - Phung, Dung

AU - Chinh, Pham Minh

AU - Nghiem, Son

AU - Hue, Nguyen T.

AU - Thai, Phong K.

PY - 2022/8/10

Y1 - 2022/8/10

N2 - Controlling and reducing PM2.5 levels are essential, but among many studies on this topic only a few have focused on assessing the effectiveness of air pollution control policies through fuel prices. This study aims to investigate the association between higher fuel prices and PM2.5 concentrations in Vietnam. Daily data on PM2.5 in the two largest cities of Vietnam (Hanoi and Ho Chi Minh City) and prices of different fuels were collected for two years (2016–2017). A linear regression model was performed to evaluate the association between PM2.5 and fuel prices, including lag effects for up to ten days. The long term and seasonal effects on PM2.5 were controlled using a natural cubic spline function of time with three degrees of freedom per year. For every 1,000 VND increase in the price of diesel, there was a decrease of 2.7% (95% CI: −8.0, 2.7) and 13.4% (95%CI: −22.3, −4.5) in PM2.5 in Ho Chi Minh City and Hanoi, respectively. On the contrary, there was no statistically significant association between gasoline prices (both RON-95 and RON-92) and PM2.5 in both Ho Chi Minh City and Hanoi. These findings provided evidence that changes in the price of the more polluting fuel (diesel) could significantly impact the level of PM2.5 in the large cities of Vietnam. Our study offers valuable perspectives for policymakers to formulate environmental policies regarding different fuel excises.

AB - Controlling and reducing PM2.5 levels are essential, but among many studies on this topic only a few have focused on assessing the effectiveness of air pollution control policies through fuel prices. This study aims to investigate the association between higher fuel prices and PM2.5 concentrations in Vietnam. Daily data on PM2.5 in the two largest cities of Vietnam (Hanoi and Ho Chi Minh City) and prices of different fuels were collected for two years (2016–2017). A linear regression model was performed to evaluate the association between PM2.5 and fuel prices, including lag effects for up to ten days. The long term and seasonal effects on PM2.5 were controlled using a natural cubic spline function of time with three degrees of freedom per year. For every 1,000 VND increase in the price of diesel, there was a decrease of 2.7% (95% CI: −8.0, 2.7) and 13.4% (95%CI: −22.3, −4.5) in PM2.5 in Ho Chi Minh City and Hanoi, respectively. On the contrary, there was no statistically significant association between gasoline prices (both RON-95 and RON-92) and PM2.5 in both Ho Chi Minh City and Hanoi. These findings provided evidence that changes in the price of the more polluting fuel (diesel) could significantly impact the level of PM2.5 in the large cities of Vietnam. Our study offers valuable perspectives for policymakers to formulate environmental policies regarding different fuel excises.

KW - Air pollution

KW - Diesel

KW - Exhaust emission

KW - Fuel prices

KW - PM

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U2 - 10.1016/j.jclepro.2022.132245

DO - 10.1016/j.jclepro.2022.132245

M3 - Article

SN - 0959-6526

VL - 361

JO - Journal of Cleaner Production

JF - Journal of Cleaner Production

M1 - 132245

ER -

Higher diesel price is associated with lower level of pollution: Evidence from Vietnam

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