...wrote a letter to the editor for the Herald?
I wouldn't be admonishing people for driving or anything like that. I'm just wondering if it would be a good way to get the word out about things.
Pretty much what I would say is look, school's back in session, UNDCC is going strong, and so you might see some of us out on the roads. This is where we usually ride (describe Merrifield, airport loops, greenway, TR), so please take care, especially since we may have newer members who aren't used to riding in a group yet. If you have any questions, please flag us down, etc.
Seriously, though, the Grand Forks driving community is leaps and bounds further than it was when I first got here. I think such a letter might be taken as what it is--just a heads-up that there will be more of us around and that we'll be doing our best to follow traffic laws the same as everyone else.
I would sign with my own name, "UND Cycling Club member;" unless anyone else would like to be on it as well?