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Theoretical Research on Longitudinal Profile Design of Superhighways
Joint Authors
He, Yongming
Song, Yuting
Pei, Yulong
Ran, Bin
Kang, Jia
Source
Journal of Advanced Transportation
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-12-28
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
To improve driving safety on superhighways, longitudinal profile design parameters of a superhighway are calculated via force analysis while a car is driven on a slope.
The calculations consider characteristics of drivers, cars, and roads.
According to the vehicle type, design speed, and natural conditions, the maximum longitudinal slope of a superhighway is calculated and compared with those of an ordinary superhighway and high-speed railway.
Based on analysis of the vehicle climbing performance, braking performance, and driver visual characteristics, the maximum and minimum slope lengths of a superhighway are calculated.
By analyzing the elements of vertical curves, the minimum radius and minimum length of the vertical curves of a superhighway are calculated by considering factors such as mitigating the impact at the slope bottom, driving at night, and driving time along vertical curves.
Analysis and calculation results show that when the maximum longitudinal slope is 2.50%, 2.25%, and 2.00%, the minimum slope length is 450 m, 400 m, and 350 m, respectively, and the minimum vertical curve length is 145 m, 130 m, and 115 m, respectively, and the superhighway travel requirements can be satisfied at speeds of 180 km/h, 160 km/h, and 140 km/h, respectively.
American Psychological Association (APA)
He, Yongming& Song, Yuting& Pei, Yulong& Ran, Bin& Kang, Jia. 2020. Theoretical Research on Longitudinal Profile Design of Superhighways. Journal of Advanced Transportation،Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1175927
Modern Language Association (MLA)
He, Yongming…[et al.]. Theoretical Research on Longitudinal Profile Design of Superhighways. Journal of Advanced Transportation No. 2020 (2020), pp.1-14.
https://search.emarefa.net/detail/BIM-1175927
American Medical Association (AMA)
He, Yongming& Song, Yuting& Pei, Yulong& Ran, Bin& Kang, Jia. Theoretical Research on Longitudinal Profile Design of Superhighways. Journal of Advanced Transportation. 2020. Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1175927
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1175927