Speed Analysis Profile: Suggested climbing/aux lanes

[Anonymous]

Is it possible for Autocad Civil to produce suggested climbing lanes based on the vehicle operating speed analysis of vertical alignment?

[michael.robertson]

Don't know if it can but sounds like a good custom subassembly project if it doesn't. Regretfully here in Florida it's not something we deal with so I can't spend the time investigating.

[peterfunkautodesk]

This would be really easy with Subassembly Composer. There is an API function that will check the grade of the base line. You could then add a offset and point that would produce feature line in the corridor for the suggested lane. You could then add an offset alignment in those regions with a taper at the ends, target that with a new lane and remove the SA that suggested where the lanes should be.

Cheers,

Peter Funk

Autodesk, Inc.

[Anonymous]

Hullo, Newbie here, am having a hard time with climbing lanes and busbays, im using the offset alignment to represent them in plan, but when it comes to crosssections the climbing lanes don't show. Is it possible to build an assembly consisiting of a climbing lane and apply it to particular chainages along the alignment?

[peterfunkautodesk]

There are a number of ways that you could do this. One simple way would be to target the offset alignment for the width of the main road section. What this would do is where the offset alignment is present, the lane would stretch over (at the same cross slope, and where it wasn't present, the default width would be used.

Cheers,

Peter Funk

Autodesk, Inc.