00713568

Component

http://onlinepubs.trb.org...trr/1995/1484/1484-001.pdf

https://scholar.google.co...ilon&publication_year=1995

There is a practical need for estimating average delays at intersections, especially during peak periods, even if a temporary overload must be managed by the intersection. Suitable computation formulas must always be based on approximations. The formulas available are based on the degree of saturation x, where x > 1 describes the oversaturated situation. The application of x has proven to be successful in the context of signalized intersections. For unsignalized intersections, the reserve capacity R is a more elegant parameter. Here R < 0 describes the oversaturated situation. The coordinate transformation technique applied for R to derive average delays during peak periods is explained. The complexity of many influencing parameters and the algebraic solutions make it impossible to solve the complete problem analytically. However, for two levels of approximation, a set of formulas is derived to estimate the average delay during a peak hour for the vehicles on the minor street of an unsignalized intersection. These formulas can be used for practical application.

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

01399797

English

p. 1-8

1995

Transportation Research Record

0309061237

Appendices (1) ; Figures (8) ; References (18) ; Tables (2)

Formulas; Peak periods; Percent saturation; Streets; Traffic delays; Unsignalized intersections

Minor streets; Reserve capacity

Highways; Operations and Traffic Management; I71: Traffic Theory

TRIS, TRB, ATRI

Nov 21 1995 12:00AM

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• DEVELOPMENT OF SPEED-FLOW RELATIONSHIPS FOR INDONESIAN RURAL ROADS USING EMPIRICAL DATA AND SIMULATION
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• UNSIGNALIZED INTERSECTION CAPACITY AND LEVEL OF SERVICE: REVISITING CRITICAL GAP (WITH DISCUSSION AND CLOSURE)
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