I do it all the time, albeit on a 2-wheeled EZ-1. I don't understand the reference. You simply stay to the right as much as you can, and the cars and trucks will get around you as best they can. The law says I have as much right to the road as they do. I don't think a trike is any wider than when I am pulling my Burley trailer, and it's never been a problem. If it is, it's their problem...not mine.

I've been thinking about getting a trike. I test-rode one a few weeks ago, and they are a lot of fun. Almost like riding a peddleboat on land.