Research Reports

Document Type

Technical Report

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Queue Warning, Queue Detection, Queue Impacts, Queue Data, Queuing Analysis

Digital Object Identifier (DOI)


The main objectives of this study were to identify available data sets and explore methodologies for improving the detection of bottlenecks, related congestion, and queue formation, as well as formulate methodologies to determine the extent and rate of spread queues, identify their impact area, and look at potential mitigation strategies. Methodologies are provided that evaluate (a) impacts of single construction projects, (b) combined daily impacts of construction projects and incidents on selected segments of the corridor, and (c) a process to find the most appropriate schedule that minimizes the negative impact of construction, utility work or special events that require partial or full closure of a roadway. Finally, this study describes an approach to queue detection using a combination of data available from two different sources (traffic sensors and third-party data providers) and finding the best combination of the two data sources for queue detection.

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Policy brief.pdf (242 kB)
Policy Brief