This report documents the resources used to develop NCRRP Report 4: Intercity Passenger Rail in the Context of Dynamic Travel Markets. This report explains the analytical framework and models developed to improve understanding of how current or potential intercity travelers make the choice to travel by rail. The project bibliography covers seven themes: trends and differences by generation; long distance travel; attitudinal theories applied to transportation; hybrid models to integrate attitudes; environmental motivations and strategies; information technologies and the productivity of time; and application of market segmentation techniques. Three technical appendices also are included that cover: integrated choice/latent variable and hybrid model development; model application for scenario analysis; and documentation for the structural equation models.