System Modeling and Implementation of the Intermodal Airport Ground Access Planning Tool

This paper describes the structure and implementation of the Intermodal Airport Ground Access Planning Tool (IAPT) that has been developed to provide an integrated analytical system to support airport ground access planning. The tool models the interaction between three components of the system: air passenger mode choice behavior, transportation provider competitive behavior (modeled as a generalized Nash game), and traffic conditions on the regional highway network, and generates measures of both system and connectivity performance. A graphical user interface allows users to define alternative projects, run the model, and display the resulting performance measures. This paper presents the approach to modeling the system interactions within the IAPT and mathematical representation of transportation provider behavior as a Nash game. It concludes with a brief discussion of the implementation of this modeling approach in the IAPT and the associated data requirements.