Review superelevation curve details and edit superelevation design criteria.
- Superelevation Curve
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Displays the curve name and highlights the curve in the drawing. Select a curve from the list, or click Previous or Next to navigate through the curves.
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Toggle Real-time Pan
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Pans to the selected curve in the drawing.
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Create User-defined Curve
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Click to create a user-defined curve by selecting a single alignment entity or string of adjacent alignment entities.
Superelevation Curve Details
- Curve Name
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Specifies the name of the curve. The curve is highlighted in the drawing.
- Curve Definition
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Displays the curve definition.
- Automatic: the curve was automatically detected.
- User-defined: the curve was created manually.
- Design Speed
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Specifies the design speed for the curve. Click
to display the Design Speeds tab of the Alignment Properties, where you can add or change design speeds on the alignment. For more information, see Design Criteria Tab (Alignment Properties Dialog Box).
- Radius (you can enter a radius value in a user-defined curve)
- Direction (you can change the direction in a user-defined curve)
- Start Station
- End Station
- Length
Right-click any of these items for options to zoom or pan to property in the drawing.
Transition In and Transition Out Details
- Entity Before
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Displays the entity type and direction of the entities before the curve. None is displayed if the alignment begins with a curve.
- Transition Method
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Displays one of the following:
- Not Calculated
- User Defined
- Normal Transition: occurs in the area where the cross slope changes from a normal crown to full superelevation or to normal crown from full superelevation.
- Reverse Transition: occurs between two back to back reverse curves, where full superelevation for one curve transitions into full superelevation in the opposing direction.
- Compound Transition: occurs between two back to back compound curves, where full superelevation at one curve transitions into full superelevation of the other curve.
The transition method is determined by the occurrence of overlap and the type of curve (reverse or compound).
- Overlap
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Displays one of the following:
- Not Calculated
- With Previous or Next Curve
- Resolved
- None
Superelevation Criteria
Identifies the parameter values specified when superelevation was either calculated using the Calculate Superelevation wizard, or imported from a CSV file. For descriptions of each property, see Superelevation Wizard.
Typically, this node is only displayed when you use the Superelevation wizard to create superelevation. However, in a situation where you migrate a drawing, from a release prior to Autodesk Civil 3D 2026, that contains superelevation, Autodesk Civil 3D tries to determine if the criteria that was used in the calculation is available.
to indicate the status is “Out Of Date”. Click the Recalculate button to update the data display. - Superelevation Status
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Displays the current status of the superelevation data as Calculated, Not Calculated, or Out Of Date.
- Recalculate
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Click to recalculate the superelevation on all “out of date” curves. This option is displayed when a change is made to the Superelevation Criteria or design speed.
- Superelevation Wizard
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Displays the Create Superelevation dialog box where you can specify superelevation for one curve, a selection of curves, or the entire alignment.
- Tabular Editor
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Displays the Superelevation Tabular Editor. For more information, see Superelevation Tabular Editor (Panorama).