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Title:

Quality Assessment of Outsourced Probe Data on Signalized Arterials: Nine Case Studies in Mid-Atlantic Region

Accession Number:

01594158

Record Type:

Component

Abstract:

This paper presents results of an I-95 Corridor Coalition sponsored project to assess the ability of outsourced vehicle probe data to provide accurate travel time on signalized roadways for the purposes of real-time operations as well as performance measures. The quality of outsourced probe data on freeways has led many departments of transportation to consider such data for arterial performance monitoring. From April 2013 through June of 2014, the University of Maryland Center for Advanced Transportation Technology gathered travel times from several arterial corridors within the mid-Atlantic region using Bluetooth traffic monitoring (BTM) equipment, and compared these travel times with the data reported to the I95 Vehicle Probe Project (VPP) from an outsourced probe data vendor. The analysis consisted of several methodologies: (1) A traditional analysis using precision and bias speed metrics. (2) A slowdown analysis which quantified the percentage of significant traffic disruptions accurately captured in the VPP data. (3) A sampled distribution method in which uses overlay methods to enhance and analyze recurring congestion patterns. (4) Lastly, the BTM and VPP data from each 24 hour period of data collection were reviewed by the research team to assess the extent to which VPP captured the nature of the traffic flow. Based on the analysis, probe data is recommended only on arterial roadways with signal densities (measured in signals per mile) up to one, probe data should be tested and used with caution for signal densities between one and two, and is not recommended when signal density exceeds two.

Supplemental Notes:

This paper was sponsored by TRB committee AHB10 Standing Committee on Regional Transportation Systems Management and Operations.

Monograph Accession #:

01584066

Report/Paper Numbers:

16-6017

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Sharifi, Elham
Young, Stanley Ernest
Eshragh, Sepideh
Hamedi, Masoud
Juster, Reuben M
Kaushik, Kartik

Pagination:

20p

Publication Date:

2016

Conference:

Transportation Research Board 95th Annual Meeting

Location: Washington DC, United States
Date: 2016-1-10 to 2016-1-14
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Geographic Terms:

Middle Atlantic States

Subject Areas:

Highways; Operations and Traffic Management

Source Data:

Transportation Research Board Annual Meeting 2016 Paper #16-6017

Files:

TRIS, TRB, ATRI

Created Date:

Jan 12 2016 6:40PM