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Title:

UNSIGNALIZED INTERSECTION CAPACITY AND LEVEL OF SERVICE: REVISITING CRITICAL GAP (WITH DISCUSSION AND CLOSURE)

Accession Number:

00713570

Record Type:

Component

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Order URL: http://worldcat.org/isbn/0309061237

Abstract:

Operational performance at a minor street stop-controlled intersection is a function of motorist gap acceptance behavior. Issues in modeling gap acceptance are reexplored using discrete choice methods. Logit models of varying levels of sophistication are used in simulation to generate average delays at the intersection stop bar. Comparison of simulated and empirical delays suggests that deterministic methods for modeling gap acceptance may represent a reasonable tradeoff between accuracy and ease of application, but two potential concerns are at issue--namely, delay estimates are very sensitive to the value used for mean critical gap, and the use of single-valued critical gap necessitates the exclusion of disaggregate factors influencing the gap acceptance decision. Logit models estimated for intersection traffic movements have identified a number of such influential factors. Further research to explore fundamental issues of gap acceptance should be undertaken before adopting a capacity and level-of-service methodology for minor street stop-controlled intersections.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1484, Traffic Operations: Highway Capacity. 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 #:

01399797

Language:

English

Authors:

Cassidy, Michael J
Madanat, Samer M
Wang, Mu-Han
Yang, Fan

Discussers:

Troutbeck, Rod

Pagination:

p. 16-23

Publication Date:

1995

Serial:

Transportation Research Record

Issue Number: 1484
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309061237

Features:

Figures (3) ; References (15) ; Tables (2)

Uncontrolled Terms:

Subject Areas:

Highways; Operations and Traffic Management; I71: Traffic Theory

Files:

TRIS, TRB

Created Date:

Nov 21 1995 12:00AM

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