TOWARD AUTOMATION OF MOBILITY MEASURES IN PORTLAND, OREGON: MICROSCOPIC VALIDATION OF ARCHIVED FREEWAY SENSOR DATA

Intelligent transportation systems (ITS) provide the surveillance infrastructure for both advanced transportation management and advanced traveler information. Having shifted toward a much more intensified data rich environment, it is now possible to consider automatically generating mobility measures as part of an overall traffic management and information system. Many regions use inductive loop detector technology for measuring key traffic parameters such as flow, occupancy and average speed. Mobility-related measures can be produced from these data, including vehicle miles traveled, vehicle hours traveled, average speed, travel time, delay and other nationally accepted parameters that measure transportation system performance. The Portland, Oregon metropolitan region is developing a system to automate the generation of mobility measures using inductive loop detector data. In this paper, we describe a rigorous, microscopic validation process that has been developed to validate the inductive loop detector data using ground truth video. In addition, we present several methods for converting the validated data to useful visualizations which are helpful for transportation management and operations.

• Supplemental Notes:
  • Full conference proceedings are available on CD-ROM.
• Corporate Authors:

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036
• Authors:
  • Bertini, Robert L
  • El-Geneidy, A
  • Tantiyanugulchai, S
• Conference:
  • At the Crossroads: Integrating Mobility Safety and Security. ITS America 2004, 14th Annual Meeting and Exposition
  • Location: San Antonio, Texas
  • Date: 2004-4-26 to 2004-4-28
• Publication Date: 2004

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 20p

Subject/Index Terms

• TRT Terms: Data collection; Data storage; Freeways; Intelligent transportation systems; Loop detectors; Microscopy; Mobility; Speed; Traffic delays; Travel time; Validation; Vehicle miles of travel; Video cameras
• Geographic Terms: Portland (Oregon)
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00976114
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 9 2004 12:00AM