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A Travel Demand Modeling System for Istanbul

by Youssef Dehghani, PBQ&D Inc, Tampa, FL, USA,
Cathy Strombom, PBQ&D Inc, Tampa, FL, USA,
Walter Kudlick, PBQ&D Inc, Tampa, FL, USA,



Document Type: Proceeding Paper

Part of: Microcomputer Applications in Transportation II

Abstract:

This paper describes the development and application of a microcomputer-based travel demand modeling system as part of an 18-month planning and feasibility study for the Istanbul Metro and Bosphorus Rail Tunnel Project. The modeling system followed the traditional four-step transportation planning process of trip generation, trip distribution, modal choice, and traffic assignment. Model calibration was based on the results of a nine person-year data collection effort that included sixteen different travel surveys. All of the data processing of surveys was done on microcomputers. The travel modeling system was used to evaluate a wide range of public transportation alternatives, ranging from improved express bus operations, light rail transit, a heavy rail (Metro) system, improved commuter rail service, and a rail tube tunnel under the Bosphorus Strait. The results of the model calibration efforts and the preliminary findings of the alternatives analysis are presented.

Subject Headings: Rail transportation | Traffic models | Subways | Travel demand | Traffic analysis | Feasibility studies | Computer models | Istanbul | Turkey | Europe

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