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Integration of LRTP and Mesoscopic/Microscopic Models

Integration of LRTP and Mesoscopic/Microscopic Models. Mike Neidhart, PhD, AICP Volusia County MPO. Florida Model Task Force Meeting November 28, 2007. MTF – 2 Track Focus. MTF work can be divided into 2 frames of thought (or tracks/focus)

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Integration of LRTP and Mesoscopic/Microscopic Models

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  1. Integration of LRTP and Mesoscopic/Microscopic Models Mike Neidhart, PhD, AICP Volusia County MPO Florida Model Task Force Meeting November 28, 2007

  2. MTF – 2 Track Focus • MTF work can be divided into 2 frames of thought (or tracks/focus) • Research based on how we can incrementally improve our existing model framework • Research model frameworks/philosophies that are 5-10 years into the future such as incorporation of meso and/or micro models, Activity Based models, etc. • This presentation will be on Mesoscopic/Microscopic Models

  3. Background (slide content: Burghout, Koutsopoulos & Andreasson) • Macroscopic Models represent traffic as an indivisible flow by making aggregations and simplifications of the network system • Microscopic Models describe the behavior of individual drivers, their vehicles and their interactions • Mesoscopic Models maintain individual vehicle representation but with a more aggregate representation of traffic dynamics

  4. Background (slide content: Burghout, Koutsopoulos & Andreasson) • Macroscopic models are mostly used for planning level applications • Microscopic models are suited to model vehicle interactions at a high level of detail, but are usually limited to small areas due to the large amount of required input data and calibration requirements

  5. Background (slide content: Burghout, Koutsopoulos & Andreasson) • Mesoscopic models provide a middle ground with their ability to model large networks with limited network coding and calibration effort, while providing a better representation of the traffic dynamics and individual travel behavior than their macroscopic counterparts.

  6. Macro to Micro Graphic by Barcelo, Casas, Garcia & Perarnau

  7. Level of Effort Graphic by Daiheng Ni

  8. Incorporation into LRTP • Policy Makers are asking our current Macroscopic LRTP models to answer questions they were never intended to answer • Mesoscopic models will help us integrate ITS analyses into the LRTP process • Mesoscopic models can be used to model sub-areas that require a more detailed level of analysis

  9. References • Barcelo, J.; Casas, J, Garcia, D. & Perarnau, J.: Methodological Notes for Combining Macro, Meso And Micro Models for Transportation Analysis, (ND). • Burghout, W.; Koutsopoulos, H. N. & Andreasson, I.: A Discrete-Event Mesoscopic Traffic Simulation Model for Hybrid Traffic Simulation. Manuscript received March 20, 2006. • Daiheng, N.: Transportation Modelong and Simulation Past, Present, and Future. PowerPoint Presentation University of Massachusetts Amherst, July 20, 2006 • Martino, M. & Miura, D.: Introduction to Simulation in Cube. An overview of micro simulation and the unique features available only in Cube Dynasim.

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