Superelevation Calculator

Browser-only processing

Starting private browser workspace…

Python and the engineering libraries are loading into this tab. Your project files never upload to a server.

Local processingLandXML, calculations, and exports remain on this device.App … · Engine …

Curve inputs

* Required

Alignment nameCurve nameGoverning standardCurve directionPC station *PT stationDesign speed *Curve radius (ft) *Facility / rotationArea typeLane width (ft)Lanes rotated

Curve notes

Station formatCalculates automatically

Results

Ready for curve inputs

Enter PC, speed, and radius to calculate transition stations and signed lane slopes.

Review & export Pro

Exports use the same recorded calculation results shown above. Supported browsers open a Save dialog; others use Downloads.

Overlay coordinatesSelect LandXML to detectDXF preserves the LandXML XY coordinates without reprojection.