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Title:

Light Rail Capacity Model Considering the Effect of Station, Intersection and Mixed Traffic

Accession Number:

01697289

Record Type:

Component

Abstract:

Light rail is a popular transportation mode that can easily and flexibly share road infrastructure and right-of-way with other modes. Light rail capacity in mixed right-of-way operation conditions is a key piece of information that helps transportation planners and light rail operators design suitable systems and services to meet demands. Past studies on light rail capacity have focused on operation on dedicated lanes, with the interference of highway traffic only at intersections. These models cannot address operations with mixed right-of-way. Sections with a mixed right-of-way imply operation on shared lanes with highway traffic. Bottlenecks within these sections are usually at the stations and are frequently bottlenecks in the entire line as well. Therefore, in this study, the authors develop three analytical models to calculate the capacity of (a) stations without the interference of any nearby signalized intersection, (b) stations with a signalized intersection behind, and (c) stations with a signalized intersection ahead. An empirical study is performed to demonstrate the variation in capacity with respect to changes in the road environment and traffic control conditions. The traffic simulation software VISSIM is applied to validate the models. The percentage difference between analytical and simulation capacities in most cases is within 10%, indicating a reasonable prediction. Using the developed capacity models can help planners and operators design light rail systems with efficient capacity utilization and reliable services.

Supplemental Notes:

This paper was sponsored by TRB committee AP075 Standing Committee on Light Rail Transit.

Report/Paper Numbers:

19-02011

Language:

English

Corporate Authors:

Transportation Research Board

Authors:

Chen, Jing-Heng
Lai, Yung-Cheng (Rex)

Pagination:

7p

Publication Date:

2019

Conference:

Transportation Research Board 98th Annual Meeting

Location: Washington DC, United States
Date: 2019-1-13 to 2019-1-17
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Uncontrolled Terms:

Capacity

Subject Areas:

Operations and Traffic Management; Planning and Forecasting; Public Transportation; Terminals and Facilities

Source Data:

Transportation Research Board Annual Meeting 2019 Paper #19-02011

Files:

TRIS, TRB, ATRI

Created Date:

Dec 7 2018 9:22AM