Could you start a intermodal section? There are alot of us pulling these cans around ports, otr, and locally as I do. Many of us have questions and experiences that others can learn from.
Do we have ongoing intermodal threads elsewhere on the forum? The occupation specific subforums that succeeded were the ones that had a lot of discussion around the forum and we just gave people a central location for them. I'm not sure that's the case with intermodal, but I'd be glad to be shown examples of active discussions and proven wrong.
In my experience, adding a new subforum does not generate more discussion on a topic, it just creates a central location for those discussions to be found.