How to set navigation to freeways only

[AC Question]

I have a turbo 2 and cannot figure out how to set preferences. I'm often towing a large trailer and I do not want to be routed down two lane roads and would prefer to stay on major highways as much as possible unless there's an accident or other traffic delay. I cannot find any way to set my navigation to freeways only.

 

[Tim1954]

What navigation app are you using? They usually have options like that in settings of the app itself...