RE: where can I download the openroadsdesigner bentley training data

If you look at the learning path, the dataset and workbook are downloadable.

learn.bentley.com/.../ViewLearningPathDetails

I got the link by starting at the Wiki page,
communities.bentley.com/.../road_and_site_design__wiki

and then following the link 'OpenRoads Designer CONNECT Edition - Wiki Articles and Videos'.