I’d like to propose an enhancement to how end conditions are resolved when secondary alignments are in use.

Currently, when a secondary alignment is applied, end condition tie-in points are only solved at corridor intervals and linearly interpolated between them. This results in a chorded end condition tie-in solution that does not accurately tie to the existing ground between intervals.

From a modeling standpoint, this creates a noticeable reduction in 3D accuracy—particularly when compared to behavior without secondary alignments, where this issue does not occur.

A valuable enhancement would be to modify this behavior so that end condition tie-in points continuously resolve to the existing ground, rather than being interpolated between interval solutions. In other words, eliminate the chording effect and ensure the model consistently honors the target surface along the full length of the corridor.

Key benefits of this approach would include:

• Improved 3D model accuracy and reliability

• Consistent tie-in behavior regardless of secondary alignment use

• Reduced need to decrease template drop intervals (and the associated performance impacts)

• Better alignment between model, cross sections, and real-world conditions

This change would significantly improve confidence in the model for downstream use cases such as analysis, visualization, and construction deliverables.