Impacts of Snowy Weather Conditions on Expressway Traffic Flow Characteristics
Joint Authors
Weng, Jiancheng
Rong, Jian
Liu, Lili
Source
Discrete Dynamics in Nature and Society
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-03-05
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Snowy weather will significantly degrade expressway operations, reduce service levels, and increase driving difficulty.
Furthermore, the impact of snow varies in different types of roads, diverse cities, and snow densities due to different driving behavior.
Traffic flow parameters are essential to decide what should be appropriate for weather-related traffic management and control strategies.
This paper takes Beijing as a case study and analyzes traffic flow data collected by detectors in expressways.
By comparing the performance of traffic flow under normal and snowy weather conditions, this paper quantitatively describes the impact of adverse weather on expressway volume and average speeds.
Results indicate that average speeds on the Beijing expressway under heavy snow conditions decrease by 10–20 km/h when compared to those under normal weather conditions, the vehicle headway generally increases by 2–4 seconds, and the road capacity drops by about 33%.
This paper also develops a specific expressway traffic parameter reduction model which proposes reduction coefficients of expressway volumes and speeds under various snow density conditions in Beijing.
The conclusions paper provide effective foundational parameters for urban expressway controls and traffic management under snow conditions.
American Psychological Association (APA)
Weng, Jiancheng& Liu, Lili& Rong, Jian. 2013. Impacts of Snowy Weather Conditions on Expressway Traffic Flow Characteristics. Discrete Dynamics in Nature and Society،Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-498429
Modern Language Association (MLA)
Weng, Jiancheng…[et al.]. Impacts of Snowy Weather Conditions on Expressway Traffic Flow Characteristics. Discrete Dynamics in Nature and Society No. 2013 (2013), pp.1-6.
https://search.emarefa.net/detail/BIM-498429
American Medical Association (AMA)
Weng, Jiancheng& Liu, Lili& Rong, Jian. Impacts of Snowy Weather Conditions on Expressway Traffic Flow Characteristics. Discrete Dynamics in Nature and Society. 2013. Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-498429
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-498429