Investigation of New Vehicle Detectors for High-Speed Signalized Intersections

Early indications from the use of the newest vehicle detectors for high-speed signalized intersections suggested that they perform well as replacements for the Texas Department of Transportation’s (TxDOT’s) legacy systems, but this early conclusion needed verification based on rigorous field testing in a variety of traffic and environmental conditions. This research investigated the performance characteristics of detectors designed for the stop line area and indecision zone detection. In some cases, new detectors involved two technologies to cover both upstream and stop line areas. Increasing use of infrared (IR) cameras with video imaging systems was an attempt to overcome some of the limitations of traditional video detection. While these IR cameras may improve video detection for some lighting and temperature conditions, evidence suggested that they do not improve detection performance under all conditions. The objectives of this research were to: (1) Determine current TxDOT-specific needs for new vehicle detectors; (2) Identify the most promising detectors for both stop line and dilemma zone detection; and (3) Develop guidelines on each new technology and establish recommended controller and detector settings to guide TxDOT on installation and use of each detector and combination of detectors.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Technical Report
  • Features: Appendices; Figures; Maps; Photos; References; Tables;
  • Pagination: 190p

Subject/Index Terms

Filing Info

  • Accession Number: 01596736
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/TX-15/0-6828-1, 0-6828-1
  • Contract Numbers: 0-6828
  • Files: NTL, TRIS, ATRI, USDOT, STATEDOT
  • Created Date: Apr 11 2016 12:33PM