Incorporating Local Road Grades and Times-of-Day Traffic into Vehicle Specific Power Profiling for Urban Freeway Vehicle Emission Estimation

Zhuo Yao, Ting Zuo, Heng Wei, Hao Liu and Zhixia Li
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Ting Zuo: Department of Civil & Architectural Engineering & Construction Management, University of Cincinnati, USA
Heng Wei: Beijing University of Technology, China
Hao Liu: PATH Program, The University of California at Berkeley, USA
Zhixia Li: Department of Civil & Environmental Engineering, University of Louisville, USA

International Journal of Environmental Sciences & Natural Resources, 2017, vol. 7, issue 5, 117-127

Abstract: Vehicle Specific Power (VSP) is conventionally defined to represent the instantaneous vehicle engine power. It has been widely utilized that the impact of vehicle operating conditions on emission and energy consumption estimation is associated with vehicle speed, roadway grade and vehicle acceleration or deceleration on the basis of the second-by-second vehicle operation. VSP is hence incorporated as a key contributing factor into the vehicle emission models in MOVES. For practical application, however, it is always cumbersome to accurately profile VSP distribution by collecting and using localized grade and times-of-day traffic data. Therefore, it is necessary to clarify the impacts of these factors on highway vehicle emission estimation. This paper presents a study in which previous studies are extended by deeply investigating the characteristics of VSP distributions and their impacts due to varying freeway grades, as well as time-of-day traffic factors.

Keywords: earth and environment journals; environment journals; open access environment journals; peer reviewed environmental journals; open access; juniper publishers; ournal of Environmental Sciences; juniper publishers journals; juniper publishers reivew (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:adp:ijesnr:v:7:y:2017:i:5:p:117-127

DOI: 10.19080/IJESNR.2017.07.555721

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