Successive-Stage Speed Limit on Exit Ramp Upstream of Direct-Type Freeway in China
Joint Authors
Liu, Yuanlin
Ma, Yongfeng
Li, Hongwei
Lu, Jian
Source
Discrete Dynamics in Nature and Society
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-09-25
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
The first objective of this study is to analyze a successive-stage speed limit model developed for vehicles along the exit upstream ramp of direct-type freeway in China.
This paper (1) explains the necessity to implement speed limit to the exit ramp upstream, (2) analyzes whether speed limit is related to the length of the deceleration lane, vehicle type, saturation, and turning ratio and (3) proposes a speed prediction model and calibrates speed-limit sign validity model and establishes successive-stage speed limit model.
The results.
Δν85≥10 illustrates the necessity of the using speed limit on the exit ramp.
Speed-deceleration lane length curve presents two trends bounded by 200 m, so the speed limit should be in accordance with the deceleration length.
Speed-small vehicle curve closing to speed-large vehicle curve presents that the vehicle type is not the factor of the speed limit.
After curve fitting and polynomial regression, saturation is considered to be the most influential factor of speed.
Speed-saturation prediction model and calibrated speed-limit sign validity model are built through linearization.
According to the above results, successive-stage speed limit model is established.
An exit ramp was implemented to verify the feasibility and validity of the model.
American Psychological Association (APA)
Li, Hongwei& Lu, Jian& Ma, Yongfeng& Liu, Yuanlin. 2012. Successive-Stage Speed Limit on Exit Ramp Upstream of Direct-Type Freeway in China. Discrete Dynamics in Nature and Society،Vol. 2012, no. 2012, pp.1-16.
https://search.emarefa.net/detail/BIM-464034
Modern Language Association (MLA)
Li, Hongwei…[et al.]. Successive-Stage Speed Limit on Exit Ramp Upstream of Direct-Type Freeway in China. Discrete Dynamics in Nature and Society No. 2012 (2012), pp.1-16.
https://search.emarefa.net/detail/BIM-464034
American Medical Association (AMA)
Li, Hongwei& Lu, Jian& Ma, Yongfeng& Liu, Yuanlin. Successive-Stage Speed Limit on Exit Ramp Upstream of Direct-Type Freeway in China. Discrete Dynamics in Nature and Society. 2012. Vol. 2012, no. 2012, pp.1-16.
https://search.emarefa.net/detail/BIM-464034
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-464034