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Evaluation of Travel Time Variability in New Jersey Turnpike - A Case Study

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2 Author(s)
B. Bartin ; Dept. of Civil & Environ. Eng., Rutgers Univ., Piscataway, NJ ; K. Ozbay

This paper deals with a case study where the objective is to identify the optimal subset of routes for real-time traveler information in a highway network. It is assumed that the benefit from providing this information is directly related to the uncertainty of route travel times. The variance of travel times within a time period over consecutive days is employed as the indicator of this uncertainty. New Jersey turnpike is used as the study network due to the availability of vehicle-by-vehicle network specific data. The data set covers travel times between ~630 origin-destination (OD) pairs during 2004. The problem of identifying the optimal number of subset of routes is modeled as a nonlinear integer-programming problem. The proposed model is then solved using NEOS server, a common optimization solver available over the Internet. A simple heuristic for the proposed model is also presented

Published in:

2006 IEEE Intelligent Transportation Systems Conference

Date of Conference:

17-20 Sept. 2006