Deploying Advanced Technology Infrastructure for Transportation Systems Management & Operations in Maryland: US 1 Innovative Technology Deployment Corridor
Appendix E: MDOT SHA – Maryland Integrated Travel Analysis Modeling System (MITAMS)
MDOT SHA’s Maryland Integrated Transportation Analysis Modeling System (MITAMS)
The MITAMS project is composed of integrated, advanced travel demand models with fine- grained, time-sensitive traffic network models to support agency goals in the areas of planning, integrated planning and operations, and transportation systems management and operations (TSM&O). MITAMS operates at statewide, metropolitan, and subarea/corridor levels. Figure D-1 shows different MITAMS components and it’s applications for planning, operations and TSM&O.
Figure D-1: Levels of MITAMS
Figure D-2: MITAMS Component for Different Levels, Each Integrated with Dynamic Traffic Assignment
The Maryland team has developed two integrated models: BMC InSITE-DTALite and SILK AgBM-DTALite. The first is the result of integrating a dynamic traffic assignment (DTA) tool based on an existing DTALite model that covers the entire State of Maryland, and a state-of-the-art activity-based model (ABM), InSITE, (developed by Cambridge Systematics for the BMC metropolitan area). This integrated model covers most of the urbanized areas in Maryland and will support long-range planning, transportation conformity analysis, investment programming, project prioritization, equity analysis, and corridor/project planning at both SHA and Baltimore- Washington MPOs. The second model is an agent-based microsimulation travel demand model (AgBM), named SILK (for its emphasis on Search Information, Learning, and Knowledge in the travel decision-making process). SILK is funded by the FHWA Exploratory Advanced Research Program and developed by the University of Maryland for TSM&O, active traffic management, integrated corridor management, and pricing analysis along selected corridors in Maryland. This subarea/corridor AgBM-DTA model will be integrated into the Reliability Roadmap and TSM&O Strategic Plan for sustainable future applications at SHA, MPOs, and MPO member jurisdictions. MITAMS product has special focus on applications varying from short term applications such as ramp metering, dynamic message signs, work-zone analysis, dynamic lane control, incident management etc. to long terms applications such as land use change and pricing analysis. Figure3 shows how MITAMS components can be used for various applications.
Figure D-3: Applications of MITAMS Products
MITAMS product are validated at different levels for all functional classes. A straightforward convergence paradigm was implemented for integrated models based on behavioral assumptions of the travelers.
