Civil 3D 2009 and 2010

[avaldivia81897541]

Friends,

What is the main different between Civil 3D 2009 and 2010?

Thanks

[civil3Dguide]

The ribbon functions, 09 only has AutoCAD ribbon.
Stability! If you have a choice between the 2, go with 2010.
2010 C3D drawings can not be opened in 09, so keep that in mind.
There are some other new and improved features, but I can't recall what they are.

[jpaulsen]

Intersection design was introduced in 2010 and the survey module was given a major over haul.

If you Google "civil 3d 2010 new features" you will get several hits.