A COMPARISON OF REAL-TIME FREEWAY SPEED ESTIMATION USING LOOP DETECTORS AND AVI TECHNOLOGIES

It is the intent of this report to compare both loop detector systems and Advanced Vehicle Identification (AVI) systems in terms of how they measure freeway speeds. This will hopefully provide transportation engineers with a guide to choosing an appropriate system. The results will then be applied to the city of San Antonio. The objectives of this report are to: 1. determine an optimal spacing of AVI roadside readers (along and across the freeway) and probe vehicle density (number of vehicles with tags) to measure average freeway speed; 2. determine an optimal spacing of loop detectors to measure average freeway speed; 3. compare both costs (installation and maintenance) and accuracy/effectiveness of AVI systems and loop detectors to measure freeway speeds; and 4. investigate how the results could be applied to the city of San Antonio.

• Supplemental Notes:
  • This paper was published in a compilation entitled, "Compendium: Graduate Student Papers on Advanced Surface Transportation Systems".
• Corporate Authors:

  Texas A&M University, College Station

  Faculty Exchange Box H
  College Station, TX  United States  77843
• Authors:
  • van Arendonk, J
• Publication Date: 1996-8

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 49 p.

Subject/Index Terms

• TRT Terms: Accuracy; Alternatives analysis; Automatic vehicle identification; Costs; Density; Driving; Estimating; Estimation theory; Freeways; Intelligent transportation systems; Loop detectors; Measures of effectiveness; Motor vehicles; Probes (Measuring devices); Real time control; Spacing; Speed; Speed measurement; Traffic speed; Vehicle identification numbers
• Uncontrolled Terms: Effectiveness; Highway driving
• Old TRIS Terms: Advanced systems; Probes; Real time operations; Roadside readers
• Subject Areas: Finance; Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00728855
• Record Type: Publication
• Report/Paper Numbers: SWUTC/96/72840-00003-1
• Files: TRIS
• Created Date: Dec 1 1996 12:00AM