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Title:

A Methodology for Modeling the Distribution of Turning Vehicle Paths at Signalized Intersections
Cover of A Methodology for Modeling the Distribution of Turning Vehicle Paths at Signalized Intersections

Accession Number:

01504450

Record Type:

Component

Abstract:

Analytical evaluation approaches for the safety performance of signalized intersections are applicable for limited scenarios and conditions; whereas simulation based analysis tools are very flexible and promising. This study is a part of intensive efforts to develop a microscopic simulation model for the safety assessment of signalized intersections. One of the important aspects in analyzing driver maneuver, which has vital impacts on the safety performance of signalized intersections, is vehicle paths. Broadly varying paths may result in widely distributed conflict points with other conflicting movements which may affect the occurrence probability of severe conflicts. Therefore, this paper aims to develop a methodology to reproduce the variations in the paths of turning vehicles (right-turning and left-turning) considering intersection geometry, vehicle type and speed. Several signalized intersections in Nagoya City, Japan with various traffic and geometric characteristics were videotaped. A pre-developed video image processing system TrafficAnalyzer (Suzuki and Nakamura, 2006) is utilized to extract vehicle maneuvers. The analysis revealed that the paths of right-turning vehicles are more sensitive to vehicle speed and turning angle while those of left-turning vehicles are more sensitive to intersection corner radius, turning angle and vehicle speed. For modeling individual vehicle paths, this paper applies the Euler-spiral-based approximation methodology where each trajectory is fitted by an entering Euler spiral curve followed by a circular curve and an exit Euler spiral curve. The proposed models are unique since they provide a realistic and rational representation of the variations in turning vehicles’ paths inside intersections.

Supplemental Notes:

Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

Monograph Accession #:

01501394

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Alhajyaseen, Wael K M
Asano, Miho
Nakamura, Hideki
Tan, Dang Minh

Pagination:

20p

Publication Date:

2011

Conference:

3rd International Conference on Road Safety and Simulation

Location: Indianapolis Indiana, United States
Date: 2011-9-14 to 2011-9-16
Sponsors: Purdue University; Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References; Tables

Uncontrolled Terms:

Vehicle path

Geographic Terms:

Nagoya (Japan)

Subject Areas:

Highways; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control; I85: Safety Devices used in Transport Infrastructure

Files:

TRIS, TRB, ATRI

Created Date:

Jan 23 2014 1:53PM