TransCAD for the Web was the first web-based GIS for Transportation (GIS-T), and remains the only transportation GIS with web development capabilities. The default templates include Ajax applications and mashups that use Google Maps via the Google Map API. Application templates (Mapplications) are used to create a web application or service. TransCAD for the Web is a web-based version of TransCAD that uses application source code that can be edited using Javascript, HTML, and ASP.NET. The most current version is TransCAD 8.0. TransCAD 4.8 was replaced by TransCAD 5.0 on January 2, 2008, and later TransCAD 6.0 and TransCAD 7.0. 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. TransCAD has a set of dynamic segmentation and linear referencing tools for managing highway, rail, pipeline, and other networks. 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 software for transportation planning.
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