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Title:

Determination of Diversion Sensitivity at Urban Freeway Work Zones Using Bluetooth Devices

Accession Number:

01629177

Record Type:

Component

Abstract:

Planning agencies need to assess the change in travel times and diversion rates attributed to work zones to reduce the adverse effect on mobility of the roadways. To assess such changes, simulation-based models can be calibrated with empirical observations to depict traveler behavior in selecting alternate routes. In this paper, Bluetooth detectors were used to capture and model driver route choices in the presence of a work zone. A method was developed to estimate change in travel time and total volume at different routes due to work zones. The proposed method can help identify outliers and erroneous MAC IDs. Moreover, the method is robust in handling low sample sizes and bimodal distributions of travel time. The developed method was applied to a large-scale work zone stretching 8.5 miles of interstate I-40 in Raleigh, NC. Nine Bluetooth detectors were deployed in two rounds – one without work zones and one with work zone conditions. The locations of the detectors were selected a way that captured both work zone routes and alternate routes for each given origin-destination pair. In each round, data was collected continuously for 14 days for different routes, with each route contained three detectors. For three-point routes, change in travel time and traffic volume due to work zone was estimated corresponding two-point routes data. The results showed that travel time increased in work zone routes during PM peak and overnight hours. Consistency in detector placement and alignment was found as an important factor in accurately determining diversion sensitivity.

Supplemental Notes:

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

Monograph Accession #:

01618707

Report/Paper Numbers:

17-06766

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Tanvir, Shams
Ahmed, Ishtiak
Karmakar, Nabaruna
Schroeder, Bastian J

Pagination:

18p

Publication Date:

2017

Conference:

Transportation Research Board 96th Annual Meeting

Location: Washington DC, United States
Date: 2017-1-8 to 2017-1-12
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Maps; References; Tables

Identifier Terms:

Interstate 40

Geographic Terms:

Raleigh (North Carolina)

Subject Areas:

Construction; Data and Information Technology; Highways; Operations and Traffic Management; Planning and Forecasting

Source Data:

Transportation Research Board Annual Meeting 2017 Paper #17-06766

Files:

TRIS, TRB, ATRI

Created Date:

Dec 8 2016 12:47PM