As promised, here is the Zen Dude's answer to an InRoads user's question on solving an issue with PIs:
Hello Mark,
We are using Inroads to develop pipeline alignments and using roadway designer. These pipelines are small and they do not have curves at the PI's.
How can I solve the issues at those PI's? I would like to create this as realistic as possible. At the moment, I have 1-m intervals for the alignment.
Regards, JG
Here is the Zen Dude's response:
JG,
Interestingly, I arrived in Toronto this past Sunday and will be here until next Friday. I'm teaching a couple lengthy InRoads Advanced classes off of Keele & the 401.
In answer to your question, have you tried using PI Rounding? This should help with the modeling significantly.
Here are a couple slides from my Advanced training class on this:
Enjoy!!
Civilly yours,
- zen
Mark is not only a good teacher, but a good designer as well. Mark is both knowledgeable and clear in both the InRoads software and in the area of Road Design at ITD. He provides good and direct answers to questions and assists in developing solutions in the design process. He is a uniquely qualified individual. 
