Tour-based model development for TxDOT : evaluation and transition steps.
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2009-10-30
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Subject/TRT Terms:
- Passenger transportation support businesses
- Tour operators
- Paratransit services
- Trip generation
- Travel
- Transportation
- Computer models
- Simulation Paratransit services--Texas--Computer simulation
- Trip generation--Texas--Computer simulation
- Choice of transportation--Computer simulation
- Travel--Decision making--Computer simulation
- Transportation--Texas--Planning
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Edition:Technical report; Sept. 1, 2008-Aug. 31, 2009.
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Abstract:The Texas Department of Transportation (TxDOT), in conjunction with the metropolitan planning organizations (MPOs) ; under its purview, oversees the travel demand model development and implementation for most of the urban areas in ; Texas. In these urban areas, a package of computer programs labeled as the “Texas Travel Demand Package” or the ; “Texas Package” is used as the decision making tool to forecast travel demand and support regional planning, project ; evaluation, and policy analysis efforts. The Texas Package currently adopts the widely used four-step trip-based urban ; travel demand modeling process, which was developed in the 1960s when the focus of transportation planning was to meet ; long-term mobility needs through the provision of additional transportation infrastructure supply. The trip-based model ; was intended to provide basic, aggregate-level, long-term travel demand forecasts for long-range regional transportation ; plans and evaluation of major infrastructure investments. Over the past three decades, however, the supply-oriented focus ; of transportation planning has expanded to include the objective of evaluating a range of travel demand management ; strategies and policy measures to address rapidly growing transportation problems, including traffic congestion and air ; quality concerns. The travel demand management emphasis, combined with federal regulations, has placed additional ; information demands on the capabilities of travel demand models. As a result, new approaches have been developed to ; model and forecast travel demand. The new approaches include the tour-based modeling approach, which employs tours ; instead of trips as the unit of analysis. The tour-based approach enhances the behavioral realism in modeling travel demand ; and the abilities of travel forecasting models in assessing transportation policies and evaluating alternative transportation ; investments. Hence, TxDOT is considering the implementation of tour-based modeling procedures. As a first step of a ; potential advanced model implementation, this proposed project evaluates the feasibility of, and documents the potential ; benefits from, a tour-based modeling process. It documents the steps to transition toward a tour-based framework, ; including an evaluation of data needs, software requirements, and software enhancements, ease of implementation and ; application, and staffing and related resource needs.
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Main Document Checksum:urn:sha-512:6204b33103cbf94b0e542a3d9e2f757fa7c1f86291a1154b7e66d5c0105e7a252090de87f72d64ad0316a340620d3222e164d055bd3c6f399981374595545687