Friendly Fire Objects in general and Trains

[WWDriftwood]

Recently had some friendly fire issues with static objects, figured out the link/coalition/delete link, then read about in the manual, ? So that makes sense as far as object near objectives, etc. 

 

Trains - so if I have a train traveling across the map. I guess i need to go through the route and make sure all the bridges and other objects along the path are set the the trains coalition? 

I did have to different coalitions on 2 tracks side/by/side. I guess that's just a bad idea. 

 

Is that the general practice for adding trains? change the bridges to the trains coalition?