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Title:

Identifying Net Effect of Highway Project in Before-and-After Evaluation
Cover of Identifying Net Effect of Highway Project in Before-and-After Evaluation

Accession Number:

01517539

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Identifying net effect of a highway project is crucial to avoid over- or under-stating project impact. Using private-sector probe-based traffic data, this paper tries to differentiate the net effect of a new major highway project from its regional context in a before-and-after evaluation. The project of interest is Maryland Route 200, or commonly known as the Intercounty Connector (ICC) -- a six-lane electronic toll facility in Maryland connecting Interstates 270 and 95 in the Washington, D.C. metropolitan area. Congestion and travel time reliability are explored in great detail in the vicinity of the ICC and the entire metropolitan area. The analysis found that although the metropolitan area generally experienced better traffic conditions in 2012 (after) than 2010 (before), the ICC vicinity area experienced a greater magnitude of improvements than did the region overall, by a margin of about 3-4 percentage points, which is an indication of the ICC net effect. Using private sector speed data for entire years of operations enabled the agencies to evaluate congestion and reliability performance metrics from a broader transportation network and regional standpoint. This study appears to be one of the first in its kind as it demonstrates how relatively new data and technologies can be instrumental in comprehensive performance measurement in a MAP-21 era.

Supplemental Notes:

This paper was sponsored by TRB committee AHB35 Managed Lanes.

Monograph Accession #:

01503729

Report/Paper Numbers:

14-1404

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Pu, Wenjing
Mahapatra, Subrat
Tadayon, Morteza
Simpson, Dennis N

Pagination:

19p

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

Subject Areas:

Data and Information Technology; Highways; Operations and Traffic Management; I72: Traffic and Transport Planning; I73: Traffic Control

Source Data:

Transportation Research Board Annual Meeting 2014 Paper #14-1404

Files:

PRP, TRIS, TRB, ATRI

Created Date:

Jan 27 2014 2:32PM