TransCAD is the pioneering Geographic Information System (GIS) tailored specifically for transportation experts to efficiently store, visualize, manage, and analyze data relevant to transportation. This innovative system merges GIS capabilities with transportation modeling in a cohesive platform, offering features that surpass those of any competing software. It serves all transportation modes, accommodating various scales and levels of detail, making it versatile for diverse applications. TransCAD is particularly well-suited for creating transportation information systems and decision support frameworks. It operates seamlessly on commonly available hardware running Microsoft Windows, adhering to standard desktop computing protocols. With a robust GIS engine enhanced by unique transportation extensions, it includes specialized mapping, visualization, and analytical tools tailored for transportation needs. Additionally, it encompasses application modules dedicated to routing, travel demand forecasts, public transit management, logistics, and site selection, demonstrating its comprehensive utility in transportation planning. This versatility not only enhances data management but also supports informed decision-making across transportation sectors.