Citation

Chang GL, Zhuang L, Perez C. Transp. Res. Rec. 1994; 1457: 96-103.

Copyright

(Copyright © 1994, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

An exploratory procedure for analyzing the permitted left-turn capacity with exclusive lanes is presented, including several empirical models for opposing queue length prediction, permitted saturation flow of mixed traffic, and effect of bay length on the left-turn capacity. Some critical factors, such as the number of opposing lanes and the interactions between upstream and downstream green time-cycle length ratios, have been incorporated in the proposed procedures for capacity estimation. A discrete choice modeling methodology has been applied to predict the fraction of time in a cycle during which the through queue length may be over a certain distance. Such a model enables traffic engineers to determine the left-turn bay length from a cost-benefit perspective. It should be noted that all proposed empirical models are grounded on the simulation experiments with TRAF-NETSIM. Hence, adjustments or modifications may be necessary after extensive field observations are conducted to calibrate TRAF-NETSIM.

Record URL:
http://onlinepubs.trb.org/Onlinepubs/trr/1994/1457/1457-011.pdf

Language: en

Keywords

Calibration; Intersections; Mathematical models; Highway traffic control; Estimation; Computer simulation; Queueing theory; Numerical methods