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Title:

Coping with Real-World Challenges in Real-Time Urban Traffic Control

Accession Number:

01517577

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

In urban road networks, the use of real-time adaptive traffic signal control systems faces two typical challenges. First, various sources of uncertainty and disturbance can significantly degrade the accuracy of real-time flow predictions. Second, the optimization of vehicle flows must also give active attention to other transportation modes such as bus transit and pedestrian flows. In this paper, these challenges are investigated in the context of a recently implemented system called SURTRAC (Scalable URban TRAffic Control), which has now been running continuously in an actual urban environment for more than one year. SURTRAC takes a decentralized, schedule-driven approach to real-time traffic control and its design aims at urban (grid-like) networks with multiple, completing dominant flows that shift through the day. Motivated by observations of the system in operation, several strategies are proposed for strengthening the basic SURTRAC algorithm to better deal with real-world uncertainties and disruptive events, as well as multi-modal traffic demands. We evaluate the effectiveness of these strategies using both simulations and analysis of data collected from the pilot deployment.

Supplemental Notes:

This paper was sponsored by TRB committee AHB25 Traffic Signal Systems.

Monograph Accession #:

01503729

Report/Paper Numbers:

14-2103

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Xie, Xiao-Feng
Smith, Stephen F
Barlow, Gregory J
Chen, Ting-Wei

Pagination:

15p

Publication Date:

2014

Conference:

Transportation Research Board 93rd Annual Meeting

Location: Washington DC
Date: 2014-1-12 to 2014-1-16
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Uncontrolled Terms:

Road networks

Geographic Terms:

Pittsburgh (Pennsylvania)

Subject Areas:

Data and Information Technology; Highways; Operations and Traffic Management; Pedestrians and Bicyclists; Public Transportation; I71: Traffic Theory; I72: Traffic and Transport Planning; I73: Traffic Control

Source Data:

Transportation Research Board Annual Meeting 2014 Paper #14-2103

Files:

TRIS, TRB, ATRI

Created Date:

Jan 27 2014 2:44PM