Offset Alignment station issues

[Anonymous]

I created offset alignments with manual widenings, transitions, etc.  After creation, I noticed that the station tracker I was using to mask regions would connect way off the screen to a station outside of even the total station range of the offset alignment.  I have occasionally ran into this issue before, and end up having to re-create the alignment.  Just wondering if anyone else has ever ran into this issue before and if there was a way to fix it?  This particular project is very long with many widenings, so I don't really want to recreate.

[Udo_Huebner]

I saw this once with an alignment with a very large radius. Could you upload a simplified drawing to investigate this behavior?

[Anonymous]

Hey thanks for the response.  I will try to upload it now let me know if it works... Tried to get rid of all data shortcuts and dependencies.

[udo.huebner]

On my end it looks as expected. Did you possibly choose a different axis?

[Anonymous]

Try to go off of the offset alignment and not the centerline.  I experienced the issue while attempting to mask that region within the intersection.

[Anonymous]

In case anyone is curious, I found a small work around.  I switch all of the transitions from linear to curve-line-curve then set the curve radius to 0.01.  This creates basically the same offset alignment but for some reason does not do the error.  I still have no idea what causes this error, as I make every alignment, offset alignment, widening, etc the same and the error happens very rarely.

If anyone has any other insights on this, let me know!

Thanks.

[Anonymous]

Curve-Line-Curve switch only fixed it for about half of the areas.

[Anonymous · Accepted solution]

Figured it out.  So my offset region lengths were 0.1 ft in some situations.  When my alignment curved, the 0.1 ft distance was too short with respect to the tapers, thus the alignment was sort of overlapping itself.  I adjusted my offset region lengths to 0.5 ft minimum, which eliminated the problem.