Multimodal Investment Analysis: Phase 2

Phase 2 report not available


The purpose of year two of the project was to specify in mathematical form the individual modules of the conceptual model developed during year one of the project. Also, this phase of the project involved the identification of data sources and the design of databases for use in empirically testing the model during year three.

Part 1: Transportation Demand Forecast Module

This part involved the disaggregation of passenger and freight demand by purpose and commodity, the identification of factors that explain the demand for transportation, and the specification of demand forecasting functions. Also, this part involved the identification and evaluation of data and data sources required to forecast passenger and freight transportation demands.

Part 2: Transportation Network Module

This part involved the delineation of transportation networks, traffic zones and network element characteristics for all transportation modes. Types of network characteristic data that were developed include link travel times, link travel costs, link capacities, nodal loading and transfer times, nodal loading and transfer costs, nodal impedances and restrictions, etc. Also, this part involved the specification of trip generation, distribution, mode choice and assignment functions.

Part 3: Regional Economic Forecast And Policy Simulation Module

This part of the model involved the development or adaptation of a regional macroeconomic model for use in forecasting baseline economic and demographic variables. The model was also used to simulate and estimate the feedback effects of alternative changes to the transportation system. The model consisted of five major elements: a demographic element, a labor force and employment element, a personal income element, an investment element,and an input-output element.

Part 4: Transporation And Logistic Investment Analysis Module

This part involved the identification and evaluation of alternative transportation and logistic system changes. Also, this part identified the didtribution of project benefits and costs by geographic area, business sector and mode of transportation.

Part 5: GIS Database Module

This part involved the design and development of the GIS database for geographic feature and attribute data. Also, this part involved the daptation or developmet of GIS based transportation model algorithms.

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