01476748

Component

https://doi.org/10.3141/2396-05

http://scholar.google.com...mper&publication_year=2013

The U.S. Department of Transportation affirmed the integrated corridor management (ICM) initiative to mitigate traffic congestion on urban corridor networks by systematically leveraging and diverting traffic to better utilize the available capacities of parallel arterials. ICM strategies would be of utmost importance when traffic incidents that may cause significant delays occur on freeways. By effectively diverting upcoming traffic to the adjacent arterials via variable message signs and real-time traveler information systems (e.g., mobile devices), the impact of incidents can be alleviated. To understand fully the effectiveness of ICM strategies, a framework needs to be developed to model, simulate, and analyze ICM operations under different scenarios. This study developed and calibrated a VISSIM simulation model based on field-collected video and sensor data for the South of Downtown area of Seattle, Washington. The analysis aimed to quantify networkwide ICM performance by empirically diverting traffic to adjacent arterials in response to incident management for freeway operations. Multiple scenarios were built into the simulation model to account for different diversion rates as well as recurrent and nonrecurrent congestion situations. When more traffic is diverted into an arterial, the arterial’s performance degrades while improvements in travel time and delay for the freeway become marginal. Through quantitative analysis of the delay, throughput, and travel time of freeway segments and the arterial network, the trade-off in the overall system performance was carefully studied and understood. The research findings set up a solid foundation for ICM strategy development and optimization of traffic system operations.

01519063

13-3432

English

pp 38–44

2013

Transportation Research Record: Journal of the Transportation Research Board

9780309294836

Print

Figures (7) ; Maps; Photos; References (10) ; Tables (1)

Diverging traffic; Freeway operations; Integrated corridor management; Real time information; Traffic congestion; Traffic incidents; Travel time; Variable message signs

VISSIM (Computer model)

Seattle (Washington)

Highways; Operations and Traffic Management; I73: Traffic Control

TRIS, TRB, ATRI

Feb 5 2013 12:41PM

• Collisions in Freeway Traffic: Influence of Downstream Queues and Interim Means to Address Them
• Deterministic Framework and Methodology for Evaluating Travel Time Reliability on Freeway Facilities
• Empirical Study of Lane-Changing Behavior Along Different Types of High-Occupancy Vehicle Facilities in California
• Estimation of Diversion Rate During Incidents on Basis of Main-Line Detector Data
• Impact of Heavy Vehicles on Freeway Operating Characteristics Under Congested Conditions
• Impacts to Transit from Variably Priced Toll Lanes: Results from U.S. Department of Transportation Urban Partnership Agreements
• Implementation and Evaluation of Weather-Responsive Traffic Management Strategies: Insight from Different Networks
• Investigation of Lane Flow Distribution on Hard Shoulder Running Freeways
• Macroscopic Travel Time Reliability Diagrams for Freeway Networks
• Self-Learning Adaptive Ramp Metering: Analysis of Design Parameters on a Test Case in Toronto, Canada
• Simulating High-Occupancy Toll Lane Operations
• Smart Event Traffic Management: Impact on the Central Florida Regional Transportation Network and Lessons Learned
• Synthesizing Route Travel Time Distributions from Segment Travel Time Distributions
• Traffic Queue Estimation for Metered Motorway On-Ramps Through Use of Loop Detector Time Occupancies
• Use of Sensor Data to Identify Secondary Crashes on Freeways