I'm using the AASHTO superelevation wizard, and after creating a superelelvation section, Inroads calculates the runoff length incorrectly. In this example, for a 6.4% superelevation, it thinks the runoff should be 34.56 m. I want it to be 79 m, which is the length given in the 2004 Greenbook for 6.4%, 100kph design speed, 2 lanes rotated.
Is there a place to tell inroads what the design speed is, or does it pull from the rate calculator in the first step of the wizard?
Yes, the Rate and Speed come from the Rate Calculator which are stored in the geometry project and on an individual curve. This is the information used in the intital step of the wizard.
I would need to see all the settings prior to this step in the wizard to assist in determining how the values are being calculated. There are a lot of options which can impact the length calculations.
HTH
Thomas
Here's my workflow up to this point: