DETECTOR CONFIGURATION AND LOCATION AT SIGNALIZED INTERSECTIONS

The number and location of detectors on intersection approaches with actuated signal controllers and high traffic approach speeds has been studied by a variety of researchers. The relationship of detector activity to amber signal intervals and the presence of dilemma zones has likewise been investigated. Several procedures for locating multiple detectors on such problematic intersection approaches have been proposed as solutions to traffic control problems. Four multiple detector placement methods are compared, through computer simulation, with each other in a relative evaluation of their effects upon vehicular delay. Single point detection schemes are compared with multiple point detection through before and after field tests at ten typical field sites. Measures of effectiveness studied through the field tests include vehicular delay as well as accident experience. Vehicular delay statistics produced through computer simulation are compared with those obtained through field observation. Graphical as well as statistical analyses were utilized to present research results.

• Corporate Authors:

  University of Texas, Austin

  Center for Transportation Research, 3208 Red River Street
  Austin, TX  United States  78705

  Texas State Department of Highways & Public Transportation

  Transportation Planning Division, P.O. Box 5051
  Austin, TX  United States  78763
• Authors:
  • Wu, C-S
  • Machemehl, R B
  • Lee, C E
• Publication Date: 1983-3

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 228 p.

Subject/Index Terms

• TRT Terms: Intersections; Location; Signalized intersections; Statistical analysis; Traffic crashes; Traffic delays; Vehicle detectors
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00381835
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: FHWA/TX-82/48+259-1FFinal Rpt., HS-035 578, Res Rpt. 259-1F
• Contract Numbers: Res Stdy 3-18-80-259
• Files: HSL, TRIS, USDOT, STATEDOT
• Created Date: Feb 29 1984 12:00AM