00714912

Component

http://onlinepubs.trb.org...trr/1995/1494/1494-020.pdf

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

As the engineering and planning communities continue their progress toward managed and integrated transportation systems, transit will play an increasing role. Light rail transit (LRT) has already been selected and implemented by 15 U.S. cities as a rail transit alternative. As new or expanded systems are planned and designed, it is essential that engineers have the means to make the best decisions for LRT placement and operations. The purpose of this research study was to investigate the use of the TRAF-Network Simulator (NETSIM) program and JRH Transportation Engineering's TransSim II (trademark) tools for agencies interested in planning and developing LRT systems. NETSIM is one of the few available traffic analysis programs with the flexibility to model the operations and mobility impacts of transit. Similarly, TransSim II (trademark) can model the impacts of transit and has been developed for this purpose. To evaluate NETSIM and TransSim II (trademark) for simulating traffic in pretimed and actuated arterial networks, outputs from the models were compared with real-world field data from Los Angeles and Long Beach, California and Portland, Oregon. The results indicated that the models could produce moderately accurate estimates of field-stopped delay and percent-stops for individual intersections within studied networks. On a systemwide basis, the models produced reasonably reliable, accurate estimates of network travel times and could reproduce most traffic characteristics observed in the field. The models performed well in simulating the control impacts and behavior of LRT in the modeled systems.

This paper appears in Transportation Research Record No. 1494, Traffic Operations, Traffic Signal Systems, and Freeway Operations 1995. 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

01399825

English

p. 161-166

1995

Transportation Research Record

Figures (3) ; References (5) ; Tables (2)

Accuracy; Alternatives analysis; Arterial highways; Estimates; Field studies; Impacts; Light rail transit; Mobility; Operations; Signalized intersections; Stopped time delays; Traffic characteristics; Traffic simulation; Travel time; Validation

Field data

Long Beach (California); Los Angeles (California); Portland (Oregon)

Long Beach (California); Los Angeles (California); Portland (Oregon)

Administration and Management; Highways; Operations and Traffic Management; Public Transportation; I73: Traffic Control

TRIS, TRB

Dec 13 1995 12:00AM

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