This idea just popped into my head as I rolled up my driveway. A vehicle belonging to a business had just passed me, and while this driver was not rude (and people driving company vehicles generally know better than to pull nonsense like that), I thought about the times I had been able to contact a higher-up at a business to report bad behavior on the part of one of their employees. The limitation with that is that communication is generally limited to just the immediate contact at that company.
Today many businesses are on Facebook and Twitter. So, if a driver for a business is rude to you, go to either of those sites and see if the company has a presence there, and become a fan, friend or follower. Then write a polite, level-headed account of what happened on your status line in Facebook, or a Tweet on Twitter, making sure the company folks see it. (In Facebook you can post it to the company’s “wall.”) Don’t call for the driver’s head on a platter; just report the facts as you see them. Add links to the appropriate statutes if you have space.
If the company isn’t on either of these sites, you can still call them on the phone and ask to speak to a manager. If the behavior was especially egregious, call local law enforcement, too.