This workbench is being developed to provide functionality specific to transportation engineering (road and rail).
Download and extract the ZIP file into the .FreeCAD/Mod folder or use git to clone into .FreeCAD/Mod
Note: .FreeCAD/Ext is also a valid file path and may eventually become the target path for external workbenches
Discuss this Workbench on the FreeCAD forum thread dedicated to this topic: Civil engineering feature implementation (Transportation Engineering).
FYI, this thread was born of a parent thread: Civil Engineering Design functions
Joel Graff (@joelgraff) with inspiration and help from the FreeCAD community