Journal article
Data-driven approaches for emissions-minimized paths in urban areas
Computers & operations research, Vol.67, pp.34-47
03/01/2016
DOI: 10.1016/j.cor.2015.08.013
Abstract
Concerns about air quality and global warming have led to numerous initiatives to reduce emissions. In general, emissions are proportional to the amount of fuel consumed, and the amount of fuel consumed is a function of speed, distance, acceleration, and weight of the vehicle. In urban areas, vehicles must often travel at the speed of traffic, and congestion can impact this speed particularly at certain times of day. Further, for any given time of day, the observations of speeds on an arc can exhibit significant variability. Because of the nonlinearity of emissions curves, optimizing emissions in an urban area requires explicit consideration of the variability in the speed of traffic on arcs in the network. We introduce a shortest path algorithm that incorporates sampling to both account for variability in travel speeds and to estimate arrival time distributions at nodes on a path. We also suggest a method for transforming speed data into time-dependent emissions values thus converting the problem into a time-dependent, but deterministic shortest path problem. Our results demonstrate the effectiveness of the proposed approaches in reducing emissions relative to the use of minimum distance and time-dependent paths. In this paper, we also identify some of the challenges associated with using large data sets. (C) 2015 Elsevier Ltd. All rights reserved.
Details
- Title: Subtitle
- Data-driven approaches for emissions-minimized paths in urban areas
- Creators
- Jan Fabian Ehmke - Freie Universität BerlinAnn Melissa Campbell - University of IowaBarrett W. Thomas - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Computers & operations research, Vol.67, pp.34-47
- Publisher
- Elsevier
- DOI
- 10.1016/j.cor.2015.08.013
- ISSN
- 0305-0548
- eISSN
- 1873-765X
- Number of pages
- 14
- Grant note
- German Academic Exchange Service; Deutscher Akademischer Austausch Dienst (DAAD)
- Language
- English
- Date published
- 03/01/2016
- Academic Unit
- Bus Admin College; Business Analytics
- Record Identifier
- 9984380539602771
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