Superelevation Formulas and Variables for attainment

[Kenth_Kristoffer]

Hello, I need to edit the design criteria for superelevation attainment formulas.

I stumbled accross the variable {p} in the help file.

According to the help file, {p} is:

The fractional part of the transition length before the start of the curve or after the end of the curve.

Does anybody have any idea how autocad use this?

Or what are the values of {p}?

Because I cannot find any tables pertaining to it.

[twilkinson]

This is going to be your tangent runoff fraction. For example, we use 2/3 rotation on tanget and 1/3 on curve. In our alignments, {p} will return 0.66.