The Impact of Traffic Crashes on Urban Network Traffic Flow

Junwei Zeng, Yongsheng Qian, Bingbing Wang, Tingjuan Wang and Xuting Wei
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Junwei Zeng: School of Traffic and Transportation, Lanzhou Jiaotong University, Lanzhou 730070, China
Yongsheng Qian: School of Traffic and Transportation, Lanzhou Jiaotong University, Lanzhou 730070, China
Bingbing Wang: School of Traffic and Transportation, Lanzhou Jiaotong University, Lanzhou 730070, China
Tingjuan Wang: School of Traffic and Transportation, Lanzhou Jiaotong University, Lanzhou 730070, China
Xuting Wei: School of Traffic and Transportation, Lanzhou Jiaotong University, Lanzhou 730070, China

Sustainability, 2019, vol. 11, issue 14, 1-14

Abstract: This paper aims to investigate the impact of occasional traffic crashes on the urban traffic network flow. Toward this purpose, an extended model of coupled Nagel–Schreckenberg (NaSch) and Biham–Middleton–Levine (BML) models is presented. This extended model not only improves the initial conditions of the coupled models, but also gives the definition of traffic crashes and their spatial/time distribution. Further, we simulated the impact of the number of traffic crashes, their time distribution, and their spatial distribution on urban network traffic flow. This research contributes to the comprehensive understanding of the operational state of urban network traffic flow after traffic crashes, towards mastering the causes and propagation rules of traffic congestion. This work also a theoretical guidance value for the optimization of urban traffic network flow and the prevention and release of traffic crashes.

Keywords: urban road network; traffic crashes; the spatial distribution of traffic crashes; the time distribution of traffic crashes (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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