Roundabout Design Automation | Flare Length, Entry Angle & Entry Path Curvature

Automating Roundabout Design Checks with AutoLISP | Civil 3D In this video, I demonstrate a custom AutoLISP tool developed to simplify roundabout design checks in AutoCAD and Civil 3D. The tool focuses on three important geometric parameters: Flare Length Entry Angle Entry Path Curvature Manually checking these parameters can be repetitive during highway and roundabout design. This workflow demonstrates how AutoLISP can help automate parts of the process and improve engineering productivity. This tool is intended for highway engineers, road designers, Civil 3D users, and CAD/BIM professionals who want to streamline repetitive design checks. Topics covered: AutoLISP for Civil 3D Roundabout geometry checks Highway design automation Flare length, entry angle, and entry path curvature Engineering productivity using custom CAD commands Note: Always verify the tool’s calculations, geometric assumptions, and results against the applicable project design criteria and standards. If you find this useful, please like the video, subscribe, and share your suggestions for future engineering automation tools. #Civil3D #AutoLISP #RoundaboutDesign #HighwayDesign #AutoCAD #EngineeringAutomation