Queue and user’s costs in highway work zones
The IDOT Bureau of Design and Environment (BDE) Manual requires that traffic control plans for freeway reconstruction projects include a queuing analysis to determine the anticipated traffic backups in work zones. Queue length and delay calculations rely on the estimation of capacity and operating speed. In this study, field data were collected from five work zones in Illinois. Thirteen data sets were extracted from the field data. Each data set represents a particular traffic condition at a given site. A work zone capacity value was suggested for each traffic condition based on the field data. Each of these models can be adjusted to non-ideal conditions. Methods to estimate the length of moving queue, delay and users’ cost were developed to handle the cases where a demand higher than capacity causes queue. The queue length and delay were estimated for all the data sets using the proposed method. The results also were compared with the QuickZone 2 outputs. When the arrival volume in an interval was less than the capacity of the interval, the QuickZone2 did not yield any delay or queue length even though there was congestion and delay in a part of the interval.
- Record URL:
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Corporate Authors:
Illinois Department of Transportation
Bureau of Materials and Physical Research
126 East Ash Street
Springfield, IL United States 62704-4766 -
Authors:
- Benekohal, R F
- Ramezani, H
- Avrenli, K A
- Publication Date: 2010-9
Language
- English
Media Info
- Pagination: 117p + appendices
Subject/Index Terms
- TRT Terms: Highway traffic control; Traffic congestion; Traffic delays; Traffic queuing
- Geographic Terms: Illinois
- ATRI Terms: Construction site; Delay; Queue length; Traffic congestion; Traffic management
- Subject Areas: Operations and Traffic Management;
Filing Info
- Accession Number: 01380671
- Record Type: Publication
- Source Agency: ARRB
- Report/Paper Numbers: ICT-10-075
- Files: ATRI, STATEDOT
- Created Date: Aug 22 2012 11:06AM