Diagnosing Chronic Errors in Freeway Loop Detectors from Existing Field Hardware

In an effort to improve the quality of loop detector data, this research developed algorithms to automatically identify two types of detector errors that are difficult to diagnose in the field: splashover, the false detection in one lane of a vehicle from an adjacent lane; and pulse breakup, when a single vehicle produces two or more pulses in its lane of travel. The present work is likely applicable to emerging detectors seeking to replace loop detectors using wayside mounted sensors. Most of these detectors emulate the operation of loop detectors; while the mechanism of splashover and pulse breakup differs across the different detection technologies, its manifestation should be similar in the vehicle actuations.

Record URL:
Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/754241953
Corporate Authors:
Ohio State University, Columbus

Department of Civil and Environmental Engineering and Geodetic Science
Columbus, OH United States 43016

California Department of Transportation

Division of Research and Innovation
1227 O Street, MS-83
Sacramento, CA United States 94273-0001
Authors:
- Coifman, Benjamin
- Lee, Ho
Publication Date: 2011-3-18

Language

English

Media Info

Media Type: Digital/other
Features: Appendices; Figures; References; Tables;
Pagination: 143p

Subject/Index Terms

TRT Terms: Algorithms; Data quality; Detection and identification technologies; Errors; Loop detectors; Vehicle detectors
Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; I71: Traffic Theory; I73: Traffic Control;

Filing Info

Accession Number: 01359031
Record Type: Publication
Source Agency: UC Berkeley Transportation Library
Contract Numbers: IA 65A0231
Files: CALTRANS, TRIS, STATEDOT
Created Date: Nov 30 2011 12:11PM