Chapter
Jul 2, 2019
A Scale-Dynamic Network Abstraction Approach for Traffic Analysis
Authors: Lei Zhu, Yudi Li, Ye Tian, and Jian SunAuthor Affiliations
Publication: CICTP 2019
Abstract
The necessary trade-off between accuracy and efficiency of various traffic simulation tools depends on the resolution of the roadway network. While a detailed high-resolution road network could better represent connectivity of real-world road network and ensure an accurate simulation result, a low-resolution network omitting trivial details could reduce computational burden and improve the computational efficiency of traffic simulation. This study focuses on dynamically adjusting the roadway network resolution during the process of simulation-based dynamic traffic assignment (SBDTA) with the objective to expedite both the simulation and the assignment within SBDTA. We propose to divide the whole time horizon into several periods dynamically and to Abstract the network for each period separately. The result showed that half of the CPU time for both the simulation and the assignment is saved, while the network performance remains consistent or near consistent compared with the scenario using the most detailed network.
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© 2019 American Society of Civil Engineers.
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Published online: Jul 2, 2019
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Authors
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Lei Zhu
National Renewable Energy Laboratory.
Yudi Li
Dept. of Traffic Engineering, Key Laboratory of Road and Traffic Engineering, Ministry of Education, Tongji Univ., China.
Ye Tian
Dept. of Traffic Engineering, Key Laboratory of Road and Traffic Engineering, Ministry of Education, Tongji Univ., China.
Jian Sun
Dept. of Traffic Engineering, Key Laboratory of Road and Traffic Engineering, Ministry of Education, Tongji Univ., China.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.