![]() TransCAD 5.0, the current version, was released on January 2, 2008. ![]() TransCAD 3.0, the first Microsoft Windows version, was released on May 28, 1996. TransCAD was first released as a MS-DOS-based transportation GIS package in 1985. As in the previous SCAG model, the model is an aggregate, 4-step feedback model for which the primary inputs are highway and transit networks, demographic and land use data at the TAZ level. TransCAD has a set of dynamic segmentation and linear referencing tools for managing highway, rail, pipeline, and other networks. All of TransCAD’s extensive GIS and modeling capabilities can be used to further modify and analyze the model inputs and outputs. TransCAD includes trip generation, distribution, mode choice, and traffic assignment models that support transportation planning and travel demand forecasting. TransCAD uses a network data structure to support routing and network optimization models. In addition to the standard point, line, area, and image layers in a GIS map, TransCAD supports route system layers and has tools for creating, manipulating and displaying routes. TransCAD is the name of a geographic information system software product produced by Caliper Corporation for transportation and Public transport applications.
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