Research on carbon emission measurement of Shanghai expressway under the vision of peaking carbon emissions

ABSTRACT

Generally, the carbon emissions of road transportation have substantial negative effects on biological ecosystem and sustainable development. Thus, to achieve the strategy of peaking carbon emissions before 2030, research on measuring vehicle emissions in large metropolitan road networks is indispensable. With that in mind, a carbon emission macroscopic fundamental diagram model (CE-MFD) is presented to assess network-wide road emissions, and an indicator, carbon emission intensity (CEI), is quantified to capture the influence of traffic dynamics on emissions. Further, the results of CE-MFD show a positive correlation between road congestion and emissions. Based on the CEI indicator, the corresponding network-wide traffic controls are proposed for effectively reducing the emissions. In addition, the effects of electric vehicle (EV) penetration are explored. This study suggests that by 2030, even if the traffic becomes more congested, the CE-MFD of the urban expressway network will reach a peak with an EV penetration of 73%.

KEYWORDS:

• Emission measurement
• macroscopic fundamental diagram
• urban expressway
• electric vehicle
• peaking carbon emissions

Acknowledgments

This research was financially supported by the Shanghai Science and Technology Commission Fund Project (20DZ1202703, 21DZ1203803), and the Zhejiang Provincial Department of Housing and Urban-Rural Development (2020K130). Any opinions, findings and conclusions are the responsibility of the authors alone.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the Zhejiang Provincial Department of Housing and Urban-Rural Development [2020K130]; Shanghai Science and Technology Commission Fund Project [(20DZ1202703, 21DZ1203803)].