Lesson
Use Analysis, Modeling, and Simulation (AMS) to identify gaps, determine constraints, and invest in the best combination of Integrated Corridor Management (ICM) strategies.
Experience with the AMS framework on the ICM Test Corridor, San Francisco.
September 2008
United States
Background (Show)
Lesson Learned
- Be prepared to significantly modify the analysis framework and customize macroscopic, mesoscopic, and microscopic models to address different priorities on different corridors. Depending on the scope, complexity, and questions to be answered within a specific corridor, there may be more or less emphasis on each type of network analysis. Currently, there is no single model available that provides visibility into the cascading impacts of various congestion management strategies, much less combinations of strategies, across the entire network, transportation modes, and facility types; thus, an integrated approach is recommend that focuses on interfacing between the three classes of simulation models. In the Test Corridor, one of the primary goals was to measure the impacts of ICM on the performance of alternate routes and alternate transportation modes in the vicinity of high frequency incident sites during medium and high travel demand scenarios. All three classes of simulation modeling were proposed. In addition, researchers discussed applications for parametric simulation, time-of-departure choice, and pivot-point mode shift models.
- Consider the impacts of data quality on model calibration. Although the AMS framework is flexible and allows for the application of different types of models at the Pioneer Sites, limitations in all three locally available software programs (macroscopic, mesoscopic, and microscopic) may present challenges. Use available data. Depending on the availability of data, accuracy of model calibration can be impacted.
The AMS framework used in this study was designed to help decision-makers identify gaps, determine constraints, and invest in the best combination of strategies to improve performance. In addition, AMS provides a long-term capability enabling corridor managers to continually improve implementation strategies based on experience.
Application Areas
Intelligent Transportation Systems > Traveler Information > En Route Information > Wireless
Intelligent Transportation Systems > Traveler Information > Pre-Trip Information > Internet/Wireless
Intelligent Transportation Systems > Arterial Management > Information Dissemination > Dynamic Message Signs
Intelligent Transportation Systems > Freeway Management > Information Dissemination > Dynamic Message Signs
Intelligent Transportation Systems > Traffic Incident Management > Information Dissemination > Dynamic Message Signs
Intelligent Transportation Systems > Transit Management > Information Dissemination > Internet/Wireless/Phone
Intelligent Transportation Systems > Freeway Management > Ramp Control > Ramp Metering
Intelligent Transportation Systems > Freeway Management > Lane Management > High-Occupancy Vehicle Facilities
Intelligent Transportation Systems > Freeway Management > Lane Management > Pricing
Intelligent Transportation Systems > Arterial Management > Traffic Control > Adaptive Signal Control
States
None defined
Countries
Systems Engineering
Show the V
Regional Architecture(s)
Feasibility Study / Concept Exploration
Concept of Operations
System Requirements
High-Level Design
Subsystem Verification
System Verification & Deployment
System Validation
Operations and Maintenance
Changes and Upgrades
Retirement/Replacement
Systems Engineering Project/Technical Management
Focus Areas
Major Initiatives > Mobility Services for All Americans
Major Initiatives > Integrated Corridor Management Systems
Major Initiatives > Nationwide Surface Transportation Weather Observing and Forecasting System - Clarus
Major Initiatives > Emergency Transportation Operations
Other Program Activities > Amber Alert
Other Program Activities > Public Safety
Other Program Activities > Real Time Traveler Information
Other Program Activities > Rural ITS Deployment
Other Program Activities > Transit Systems
Goal Areas
Keywords
DMS, CMS, VMS, Changeable Message Signs, Variable Message Signs, ramp meters, high occupancy vehicles, carpool lanes, high occupancy vehicle lane, managed lanes, HOV, congestion pricing, value pricing, variable road pricing, traffic signals, adaptive signals
Lesson Comments
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