01152466

Component

https://doi.org/10.3141/2178-03

http://scholar.google.com...over&publication_year=2010

Density, speed, and flow are the three critical parameters for traffic analysis. High-performance traffic management and control require the estimation–prediction of space mean speed and density for large spatial and temporal coverage. Speed, including spot mean speed and space mean speed, and flow estimation are relatively easy to measure and estimate, while less attention has been devoted to measuring and estimating density. Because IntelliDrive (previously known as vehicle infrastructure integration) is a promising technology for providing a new type of real-time traffic data, and loop detector systems have already been widely deployed, this paper proposes a method to estimate freeway traffic density with both loop detector data and IntelliDrive-based probe vehicle data. The proposed method has been validated with Berkeley Highway Laboratory loop detector data combined with field-collected probe vehicle data in the first validation study and next-generation simulation video trajectory data in the second validation test. The algorithm can be used offline and in real time.

01326542

10-1333

English

pp 20-29

2010

Transportation Research Record: Journal of the Transportation Research Board

9780309160490

Print

Figures (7) ; Maps (1) ; Photos (1) ; References (9) ; Tables (1)

Freeways; Highway traffic control; Loop detectors; Probe vehicles; Traffic data; Traffic density; Traffic flow; Traffic speed; Validation

Vehicle infrastructure integration

IntelliDrive (Program); Next Generation Simulation program

Highways; Operations and Traffic Management; I73: Traffic Control

TRIS, TRB, ATRI

Jan 25 2010 10:36AM

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• Queue Management Techniques for Metered Freeway On-Ramps (With Discussion)
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• Spatial Analysis and Modeling of Traffic Incidents for Proactive Incident Management and Strategic Planning
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• To What Extent Can High-Occupancy Vehicle Lanes Reduce Vehicle Trips and Congestion? Exploratory Analysis Using National Statistics
• Violations Modeling in Studies of Concurrent-Flow Lanes
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