00492083

Component

http://onlinepubs.trb.org...trr/1989/1220/1220-002.pdf

https://scholar.google.co...ulos&publication_year=1989

Rapidly increasing traffic volume, congestion, and excessive delay are making the management, control, and guidance of traffic flow one of the most critical transportation problems in urban freeway corridors. Modeling demand diversion to less congested routes within a corridor is a necessary part of demand modeling efforts for improved simulation and control, as are guidance-navigation systems in real time. Models for describing diversion at the trip origin and diversion at freeway entrance ramps are discussed. Data collected in a major metropolitan area have shown that diversion at the origin is a function of trip time, route length, and the number of intersections along the trip. However, trip time is the dominant determining factor and can be employed to estimate the decision in the absence of additional information. Diversion at freeway entrance ramps depends on the perceived trip time on the freeway and arterial and the perceived waiting time at the ramp queue. The data confirm that socioeconomic indicators do not play a role in the diversion decision. The purpose of developing these models is for dynamic simulation, on-line freeway corridor control, and demand forecasting suitable for guidance and navigation.

This paper appears in Transportation Research Record No. 1220, Forecasting. 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

01414064

p. 12-20

1989

Transportation Research Record

0309048141

Figures (3) ; References (19) ; Tables (4)

Freeways; Mathematical models; Progressive traffic signal control; Traffic diversion; Traffic forecasting; Traffic simulation; Transportation corridors; Travel demand; Travel time; Urban areas; Urban growth

Models

Highways; Planning and Forecasting; Terminals and Facilities; I72: Traffic and Transport Planning

TRIS, TRB, ATRI

Mar 31 1990 12:00AM

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