TRA has advanced computer-generated mapping and graphic techniques. We operate ArcView and ArcGIS, the most widely used geographic information systems (GIS) software, on a network providing database and mapping integration for detailed project analysis.

Software links allow export and import of information between AutoCAD and GIS. AutoCAD is used to prepare visual impact analyses simulating project impacts on a two- or three-dimensional landscape from the viewpoint of sensitive receptors, and TRA’s landscape architect uses this software to prepare construction drawings for restoration projects that then go out to bid. AutoCAD and GIS capabilities have also been used to develop alternative project designs, quantify and portray impacts to vegetative communities, illustrate wildlife corridors, depict slope, present conservation options, and geographically present the results of noise and air quality models.