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Citation |
Koppelman FS. Transp. Res. Rec. 1989; 1241: 1-8. |
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Copyright |
(Copyright © 1989, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing) |
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DOI |
unavailable |
PMID |
unavailable |
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Abstract |
In this paper, the relevant issues concerned with development of intercity travel demand models are examined, and a behavioral framework and model system for the set of complex and interrelated choices undertaken by travelers and potential travelers in the intercity travel market are developed. The desired properties of a data set for estimation of a disaggregate intercity travel demand model system are formulated, and existing intercity travel data sets are evaluated with repect to these properties. No existing data set satisfies all the requirements for estimation of a system of disaggregate intercity demand models. Nonetheless, it is useful to use the best available data to demonstrate the proposed behavioral framework and model structure. The 1977 National Travel Survey, supplemented with data on intercity level of service, is used to estimate models of intercity trip frequency and destination, mode, and air fare/service class choice. The estimation results support the proposed behavioral structure and the corresponding model structure. Deficiencies in the estimated models are attributed to the characteristics of the data set used in this study. Collection of data specifically for estimation of a system of disaggregate intercity travel models is needed to develop a model system that is behaviorally consistent and has a high degree of predictive accuracy. Language: en |