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:
  https://dot.ca.gov/-/media/dot-media/programs/research-innovation-system-information/documents/f0017219-65a0231-tid-0978-final-report-a11y.pdf
• Record URL:
  https://merritt.cdlib.org/api/presign-file/ark%253A%252F13030%252Fm5736tv0/3/producer%252FCA10-0978.pdf
• 
• 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
• Report/Paper Numbers: CA10-0978
• Contract Numbers: IA 65A0231
• Files: CALTRANS, TRIS, STATEDOT
• Created Date: Nov 30 2011 12:11PM