Name
Title | ||
|---|---|---|
Development of an ITS Data Archive Application for Improving Freeway Travel Time Estimation |
Abstract | ||
|---|---|---|
The dissemination of travel time information has become crucial with the advent of ATIS. This paper summarizes the results of a comparative analysis between two travel time algorithms applied to archived loop detector data. Travel time estimates derived from the algorithms are compared to ground truth probe vehicle data. Our results indicate that Coifman's algorithm is more accurate for estimating travel times than a standard segment midpoint algorithm. However, the accuracy of the travel time estimates was dependent on the location and spacing of detectors and the location and formation of queues with respect to the detector positioning. this study, a standard midpoint algorithm and one developed by Coifman have been used to estimate travel time for selected freeway links in the Portland, Oregon freeway network. We compare the estimated travel times to the ground truth probe vehicle data for the same links. The remainder of this paper is divided into four sections. The next section will outline the data sources and the location of the site. Next the methodology used in the study will be described, followed by a description of the analysis. Finally we present our findings and some recommendations. II. SITE LOCATION AND DATA Nine links were chosen from the Portland, Oregon freeway network to test the performance of the standard midpoint algorithm and the one developed by Coifman. A map showing the location of the links is shown in Fig 1. These links were chosen on the basis of availability of |
Year | DOI | Venue |
|---|---|---|
2006 | 10.1109/ITSC.2006.1707396 | ITSC |
Keywords | Field | DocType |
transportation,estimation theory,comparative analysis,ground truth | Midpoint,Simulation,Queue,Ground truth,Engineering,Estimation theory,Travel time,Detector,Data archive,Loop detector | Conference |
Citations | PageRank | References |
1 | 0.63 | 0 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Sirisha M. Kothuri | 1 | 1 | 0.63 |
| Kristin Tufte | 2 | 1241 | 146.09 |
| Soyoung Ahn | 3 | 24 | 3.54 |
| Robert L. Bertini | 4 | 43 | 8.92 |