01152751

Component

https://doi.org/10.3141/2178-01

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

Incidents are a major source of uncertainty in freeway operations. Secondary crashes are an important category of freeway incidents. Until now, secondary crashes have been assumed to occur at the boundary of high-density queues formed upstream of an initial crash. While much research has concentrated on the relationship between incident duration and secondary-crash likelihood, the incident’s influence area is widely treated as independent of prevailing traffic conditions and incident characteristics. This paper extends research by developing a Bayesian network for the probabilistic estimation of different influence areas for secondary-crash occurrence with respect to various incident and traffic characteristics. Results indicate that traffic conditions at the time of an incident, as well as the time needed to respond to and clear the crash scene, are the most significant determinants in defining the upstream influence area of a crash.

01326542

10-0483

English

pp 1-9

2010

Transportation Research Record: Journal of the Transportation Research Board

9780309160490

Print

Figures (4) ; Maps (1) ; References (25) ; Tables (4)

Bayes' theorem; Freeway operations; Incident management; Secondary crashes; Time duration; Traffic characteristics; Traffic density; Traffic incidents

Bayesian networks; Incident duration

Highways; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control; I80: Accident Studies

TRIS, TRB, ATRI

Jan 25 2010 10:15AM

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• Comparison of Algorithms for Systematic Tracking of Patterns of Traffic Congestion on Freeways in Portland, Oregon
• Dynamic Toll Concept to Assess Feasibility of High-Occupancy Vehicle Lane on Kyungbu Freeway, South Korea
• Empirical Method for Estimating Traffic Incident Recovery Time
• Estimation of Freeway Traffic Density with Loop Detector and Probe Vehicle Data
• Exploration of Operational Concepts of Interoperability for Robust Interregional Transportation System Operations
• Freeway Sensor Spacing and Probe Vehicle Penetration: Impacts on Travel Time Prediction and Estimation Accuracy
• Heuristic Ramp-Metering Coordination Strategy Implemented at Monash Freeway, Australia
• Local Ramp Metering in Random-Location Bottlenecks Downstream of Metered On-Ramp
• Modeling Accident Duration and Its Mitigation Strategies on South Korean Freeway Systems
• Predicting Freeway Travel Time Under Incident Conditions
• Queue Management Techniques for Metered Freeway On-Ramps (With Discussion)
• Simulation Tool to Assess Impacts of Parameters of Service Patrol Operations
• Spatial Analysis and Modeling of Traffic Incidents for Proactive Incident Management and Strategic Planning
• Stochastic Characteristics of Freeway Traffic Speed During Breakdown and Recovery Periods
• 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
• What Drives Decisions of Single-Occupant Travelers in High-Occupancy Vehicle Lanes? Investigation Using Archived Traffic and Tolling Data from MnPASS Express Lanes