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Title:

Effectiveness of Work Zone Intelligent Transportation Systems -- Evaluation Framework and Case Studies

Accession Number:

01518158

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

In the last decade, Intelligent Transportation System (ITS) technologies have increasingly been deployed in work zones by state departments of transportation. ITS improves traffic operations and safety by providing real-time information to travelers, monitoring traffic conditions, and managing incidents. Although there have been numerous ITS deployments in work zones, a framework for evaluating the effectiveness of these deployments does not exist. To justify the continued development and implementation of smart work zones, this study developed a framework to determine ITS effectiveness for specific work zone projects. The framework recommends using one or more of five performance measures: diversion rate, delay time, queue length, crash frequency, and speed-based measures. The monetary benefits and costs of ITS deployment in a work zone can then computed using the performance measure values. Such ITS computations include additional considerations that are typically not present in standard benefit-cost computations. The proposed framework will allow for consistency in performance measures across different ITS studies thus allowing for comparisons across studies or for meta analysis. In addition, guidance on the circumstances under which ITS deployment is recommended for a work zone are provided. The framework was illustrated using two case studies: one urban work zone on I-70 and one rural work zone on I-44, in Missouri. The goals of the two ITS deployments were different – the I-70 ITS deployment was targeted at improving mobility whereas the I-44 deployment was targeted at improving safety. The benefit-cost ratio for the I-70 deployment was 2.05 to 1 and the I-44 deployment was 39 to 1.

Supplemental Notes:

This paper was sponsored by TRB committee AHB55 Work Zone Traffic Control.

Monograph Accession #:

01503729

Report/Paper Numbers:

14-1022

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Edara, Praveen
Robertson, Andrew
Sun, Carlos

Pagination:

18p

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

Identifier Terms:

Interstate 44; Interstate 70

Geographic Terms:

Missouri

Subject Areas:

Highways; Operations and Traffic Management; I72: Traffic and Transport Planning

Source Data:

Transportation Research Board Annual Meeting 2014 Paper #14-1022

Files:

TRIS, TRB, ATRI

Created Date:

Jan 27 2014 2:24PM