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Title: Estimation of Traffic Conflict Risk for Merging Vehicles on Highway Merge Section
Accession Number: 01333458
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: This study proposed a methodology for estimating rear-end conflict risk of vehicles on freeway merge sections as a probabilistic measure. The methodology consisted of two major components. The first part estimated the merging probability of a vehicle, given its position on a merge lane. Detailed vehicle trajectory data from the Next Generation Simulation program were used to find the underlying probability density function of the merging decision. The second part derived the probabilistic risk of a merging vehicle conflicting with vehicles around it as a function of a surrogate safety measure, namely, modified time-to-collision. These two parts were combined, and an index was proposed to describe the conflict risk of each merging vehicle at each time step. With aggregation of the conflict risk over time and space, a risk map for describing the level of conflict risk could be created. A case study demonstrated the implementation of the proposed method for traffic conflict analysis in detail. The result of this study can be used to evaluate the safety level of merge sections and develop real-time traffic control strategies to reduce conflicts associated with merging traffic.
Monograph Title: Monograph Accession #: 01360407
Report/Paper Numbers: 11-3607
Language: English
Authors: Yang, HongOzbay, KaanPagination: pp 58-65
Publication Date: 2011
ISBN: 9780309167567
Media Type: Print
Features: Figures
(6)
; Photos
(1)
; References
(23)
; Tables
(1)
TRT Terms: Identifier Terms: Uncontrolled Terms: Subject Areas: Data and Information Technology; Highways; Safety and Human Factors; I83: Accidents and the Human Factor
Files: TRIS, TRB, ATRI
Created Date: Feb 17 2011 6:35PM
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