LEVEL OF SERVICE CRITERIA FOR COMPUTER TRAFFIC CONTROL SYSTEM PARAMETERS. SESSION 7
The results of this study show that, of the three traffic flow parameters considered, occupancy is the best indicator of stopped-time-delay level of service. The other two parameters (i.e., volume and speed) were not sensitive enough to changes in stopped-time delay to be accurate measures of level of service. However the relationship between stopped-time delay and occupancy is a function of the timing of the signal that controls the traffic in the lane in which the system detector is located. Consequently it is not possible to establish one set of preset threshold values of occupancy for all system detectors, that corresponds to the stopped-time-delay level of service criteria. Nor is it possible to establish a single set of preset threshold values for any one detector, because when the timing of the controlling signal changes, the threshold values of occupancy also change. (Author)
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Supplemental Notes:
- This paper was presented during the Institute of Transportation Engineers 54th Annual Meeting, San Francisco, California, September 23-27, 1984.
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Corporate Authors:
Institute of Transportation Engineers (ITE)
Washington, DC United States -
Authors:
- McCoy, P T
- Ullman, G L
- Conference:
- Publication Date: 1984
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 7-12
Subject/Index Terms
- TRT Terms: Information processing; Level of service; Software; Traffic control; Traffic delays; Traffic flow; Traffic speed; Traffic volume; Vehicle occupancy
- Uncontrolled Terms: Criteria; Modifications
- Old TRIS Terms: Traffic control systems
- Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;
Filing Info
- Accession Number: 00390593
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 30 1985 12:00AM