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Title:The Implementation of an Integrated Transportation Planning Model With GIS and Expert Systems for Interactive Transportation Planning
Author(s):Choi, Keechoo
Doctoral Committee Chair(s):Kim, Tschangho John
Department / Program:Urban and Regional Planning
Discipline:Urban and Regional Planning
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Civil
Operations Research
Artificial Intelligence
Abstract:The purpose of this research is to examine the possible benefits of combining transportation planning models with geographic information systems (GIS) and expert systems (ES) in the hope that integrating these systems can alleviate the inherent problems of transportation planning models such as user-unfriendliness, labor-intensiveness, and theoretical limitations.
Specifically, this research focuses on the potential application of GIS topological data base to generate transportation network and traffic analysis zone (TAZ) configurations in the context the of interactive transportation planning process. To achieve these goals, first, network incompatibility between GIS and the conventional transportation planning models has been carefully reviewed and it is concluded that resolving this conflict in topologies is a cornerstone for eliminating the user-unfriendly and labor-intensive problems of the conventional transportation planning model. To implement this, a FORTRAN-based topology conversion algorithm has been developed to convert GIS topology into transportation network topology.
Second, to overcome the theoretically static and sequential aspects of the conventional four-step transportation planning model, a feedback mechanism and looping structure have been simulated to seek a better spatial aggregation form (a better traffic analysis zoning scheme) and a more appropriate scale of spatial aggregation (a more appropriate level of network detail). Along with statistical clustering methods, GIS topology is utilized to propose a set of alternative TAZ schemes that may produce overall better results of the conventional transportation planning model. To implement this, FORTRAN-based zone aggregation routines have been developed for grouping spatially homogeneous subregions based on a heuristic algorithm.
An expert system, in the integration, facilitates the generation of the input for the transportation planning model and provides a user-friendly interface. Moreover, the application of an expert system resolves judgmental issues in the transportation planning process. The expert system also governs a feedback mechanism in the sequential modeling approach and provides a user-friendly interface. The provision of this function is an important addition since variations in TAZ schemes and network conditions often generate different results.
To demonstrate the feasibility of integrating transportation planning models, GIS and ES, the design and development of an interactive desktop transportation planning system called TranDASS was developed. TranDASS is a personal computer-based decision support system developed to aid quick responsive support for transportation planning process. The result of empirical evaluation reveals that the conceptual framework of TranDASS can be easily applied to analyzing transportation problems in different cities, regions, or countries.
Issue Date:1993
Description:235 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1993.
Other Identifier(s):(UMI)AAI9314853
Date Available in IDEALS:2014-12-16
Date Deposited:1993

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