View warning messages that indicate issues that cause inaccurate superelevation axis of rotation calculations.
To obtain accurate superelevation axis of rotation pivot point calculations, an assembly must include subassemblies (such as LaneSuperelevationAOR) that fully support axis of rotation. If an assembly uses fully supported subassemblies, but has other issues that would result in inaccurate calculations, a warning is issued either as an icon on the assembly in layout mode, or as a message in the Event Viewer.
The following sections describe the cases in which a warning is issued.
Assembly Layout
In the following cases, a 
symbol is displayed on the pivot flag in layout mode as you compose an assembly:
| Warning | Solution |
|---|---|
| Unsupported in assemblies containing offsets |
The axis of rotation calculation will not run on an assembly that contains an offset. Remove the assembly offset. For more information, see To Work With Assembly Offsets. |
| Unsupported subassemblies |
The unsupported subassembly's level difference is ignored in the pivot point calculation. The level of the profile gradient and pivot point line are incorrect. Replace unsupported subassemblies with fully supported subassemblies. For more information, see Profile Gradient Line Adjustments During Superelevation. |
| Center pivots not applied when only one group |
To use a Center pivot in a dual crowned carriageway, each side of the assembly must be created in a separate group. Recreate the assembly, separating the left and right sides into separate groups. For more information, see About Subassembly Groups. |
| Center pivots applied only to dual crowned carriageways |
The assembly has a valid crown, but in the Assembly Properties, the Assembly Type is not Dual Crowned Road. In the Assembly Properties dialog box, set the Assembly Type to Dual Crowned Road. |
Event Viewer
In the following cases, warnings are issued in the Event Viewer during the superelevation calculation:
| Warning | Solution |
|---|---|
| Superelevation axis of rotation is not supported on assembly offsets. |
The axis of rotation calculation will not run on an assembly that contains an offset. Remove the assembly offset. For more information, see To Work With Assembly Offsets. |
| Superelevation axis of rotation is not supported on assemblies containing subassemblies with no AOR support. |
The unsupported subassembly's level difference is ignored in the pivot point calculation. The level of the profile gradient and pivot point line are incorrect. Replace unsupported subassemblies with fully supported subassemblies. For more information, see Profile Gradient Line Adjustments During Superelevation. |
| The carriageway type assigned in alignment superelevation curve criteria does not agree with the type selected in the assembly. Superelevation results may be unexpected. | The carriageway type that is set in the Assembly Properties dialog box must match the carriageway type that is specified for the alignment. Check the assembly carriageway type in the Assembly Properties dialog box. Check the alignment carriageway type in either the Superelevation Curve Manager or the Calculate Superelevation wizard. |
| Superelevation axis of rotation using center pivots on a dual road requires a valid crown point specified in group. |
Make sure the lane subassemblies have two points specified as crown. Both crown points must be at the same location. For more information, see To Work With Assemblies That Support Superelevation Axis of Rotation Pivot Points. |
| Centers/Central Reserve Edge pivots are not applied on dual carriageways when assembly contains only one group. |
To use a Centers/Central Reserve Edge pivot type in a dual carriageway, each side of the assembly must be created in a separate group. Recreate the assembly, separating the left and right sides into separate groups. For more information, see About Subassembly Groups. |
| Superelevation curve criteria specifies axis of rotation, but the assembly does not contain pivots. |
The assembly contains a subassembly that does not support superelevation axis of rotation pivot points, or the Potential Pivot and Point Code parameters for a subassembly are not set properly. Recreate the assembly using a subassembly that supports superelevation axis of rotation pivot points. Make sure that the Potential Pivot and Point Code parameters are set properly. For more information, see About Assemblies That Support Superelevation Axis of Rotation Pivot Points. |