RELIABILITY OF SYSTEM DETECTOR DATA IN REPLICATING FIELD CONDITIONS FOR THE INTEGRATED MOTORIST INFORMATION SYSTEM. FINAL REPORT

Freeway surveillance and control systems generally include surveillance of freeway mainline and ramp traffic using electronic loop detectors. The information collected by these detectors is used to indicate overall system status and as input to incident detection algorithms. Another possible use for this data is to provide travel time and delay information for individual freeway segments. This type of data is typically collected through labor intensive and costly "moving car" field studies. This study investigated the feasibility of using data collected by loop detectors in a typical freeway surveillance and control system as a substitute for speed and travel time data collected through traditional travel time and delay field studies. Several relationships between field and system data collected at an existing freeway surveillance and control system were developed. With some calibration, these relationships should be applicable to other systems.

• Corporate Authors:

  Federal Highway Administration

  Turner-Fairbank Highway Research Center, 6300 Georgetown Pike
  McLean, VA  United States  22101
• Authors:
  • Henson, L D
• Publication Date: 1988-8

Media Info

• Pagination: 154 p.

Subject/Index Terms

• TRT Terms: Driver information systems; Feasibility analysis; Freeways; Loop detectors; Traffic delays; Traffic surveillance; Travel time
• Subject Areas: Highways; Operations and Traffic Management; I71: Traffic Theory;

Filing Info

• Accession Number: 00479389
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: FHWA/RD-88/192
• Files: TRIS, USDOT
• Created Date: Feb 28 1989 12:00AM