Cognitics is currently developing a software product that will take complex terrain features such as multi-level freeway interchanges, and automatically build a topologically correct three dimensional model of the feature. Using available source data including vector data, Digital Elevation Models (DEM), and LiDAR, the 3D Analyzer can generate accurate models of real-world features. When sufficient data is unavailable, the analyzer falls back to using civil engineering standards to build a realistic model that can be edited manually to reflect the real-world feature more accurately. The output of this product is CityGML as an intermediate format, and fully modeled and textured model files that can be integrated into a simulation system.