https://communities.bentley.com/products/road___site_design/f/geopak-inroads-mx-openroads-forum/111722/left-turn-median-civil-cell-open-roadsI am new to the software, but have been playing around quite a bit with the civil cells and have watched the tutorials/videos. I have a median with left turn lane civil cell, with a ditch in the median. I have a terrain model going from EoP to EoP whichen-USTelligent Community 12https://communities.bentley.com/thread/619695?ContentTypeID=1Thu, 12 Nov 2020 14:43:06 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:876f0a62-7f5a-4a7b-b3e1-3feee465b7b6MaryB<p>This may be a case where you may benefit from separating your roadway into different corridors - and not just by length. You can create the corridor for just your mainline pavement, then you can add a corridor for your turn lane and median, which targets that original terrain. You may be able to avoid as many civil cells if you can rethink &quot;what is a corridor&quot;.</p><div style="clear:both;"></div>https://communities.bentley.com/thread/619615?ContentTypeID=1Thu, 12 Nov 2020 08:21:58 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:acdbe825-a2a4-4e4b-b766-268a14c2312cJan Blaasse<p>If you have a design that depends on an active terrain, you can not change your active terrain without messing up the design.<br />You might want to check if it&#39;s possible to &quot;hard code&quot; part of your design model to use a specific terrain model name. That way it doesn&#39;t matter what the active terrain is.</p><div style="clear:both;"></div>https://communities.bentley.com/thread/619524?ContentTypeID=1Wed, 11 Nov 2020 23:11:34 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:e03f613d-b455-49ba-aae7-33c6af0c2a48James Anding<p>I recommend keeping your corridor length to a manageable distance and sparingly use civil cells.</p><div style="clear:both;"></div>