Superelevation Calculator

Browser-only processing

Starting private browser workspace…

Python and the engineering libraries are loading into this tab. Calculations run locally; the LandXML retention control appears beside the file selector.

Local calculationsDOT standard, speed, radius, and PC/PT are collected without account linkage. LandXML retention is controlled below. Privacy detailsApp … · Engine …

Curve inputs

* Required

Alignment nameCurve nameGoverning standardCurve directionPC station *PT stationDesign speed *Curve radius (ft) *Facility / rotationArea typeLane width (ft)Lanes rotatedOverride standard circular transition placement

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.