Simulation-Based Environmental Risk Analysis of Mixed Traffic Flow at Intersections
Publication: ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 8, Issue 4
Abstract
Environmental pollution risk caused by urban transport emissions is becoming increasingly serious and is an urgent issue in the process of establishing sustainable transport systems. In particular, the development of accurate microscopic models about motor vehicle emissions and the quantitative evaluation of the impact of various traffic management measures on traffic emissions are crucial. This study established and calibrated a simulation for exhaust emission analysis based on high-precision onboard emission test data. Using the simulation models, this study analyzed the emissions ratios of CO, HC, and of mixed traffic (including light and heavy vehicles) at typical urban intersections. The results reveal the emission patterns of mixed traffic and show that heavy vehicles contribute to over 70% of CO, 65% of HC, and 90% of at urban intersections even though the number of heavy vehicles is merely 20% of overall traffic. The results indicate that the storage length of lanes at an intersection does not have significant effects on traffic emissions. The results provide the scientific basis for formulating effective energy-saving, emission-reducing traffic management measures and establishing a green transport system.
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Data Availability Statement
All data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This work was supported by the Zhejiang Provincial Natural Science Foundation of China under Grant No. LGF21E080002 and by the Ministry of Education of Humanities and Social Science Project under Grant No. 19YJCZH200.
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Information & Authors
Information
Published In
ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 8 • Issue 4 • December 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Apr 8, 2022
Accepted: May 10, 2022
Published online: Jul 26, 2022
Published in print: Dec 1, 2022
Discussion open until: Dec 26, 2022
ASCE Technical Topics:
- Air pollution
- Disaster risk management
- Emissions
- Engineering fundamentals
- Environmental engineering
- Highway and road management
- Highway transportation
- Highways and roads
- Infrastructure
- Intersections
- Models (by type)
- Pollution
- Risk management
- Traffic analysis
- Traffic engineering
- Traffic flow
- Traffic management
- Traffic models
- Transportation engineering
- Urban and regional development
- Urban areas
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