Corridors are used in AutoCAD Civil 3D to model roads, highways, channels, and any feature that can be represented with a typical section, or an assembly object. In this session, the teacher offers 77 minutes of instruction on how to create corridor models in AutoCAD Civil 3D 2011. In addition to learning the different components in the UI for corridor modeling, the instructor discusses the corridor components (baselines, regions, target mapping), how to create corridor models, corridor feature lines, creating corridor surfaces and extracting corridor data. You also learn how to view and edit sections using the Section Editor.