landscaping to separate driveways?
My driveway and my neighbor's driveway are right smack against each other, and traditionally there's been no problem w/ each of us using the other's paving to get in and out/around other vehicles. Lately, though, too many tire marks are appearing in my front lawn (that I didn't put there), and most recently, the cap on my sewer line was knocked off by somebody turning around. I've decided that I'm going to put some type of barrier up, although a fence isn't an option thanks to local zoning regulations.
I'm considering building some wooden boxes, perhaps a foot wide and a foot tall, filling them with soil, and planting flowers, shrubs, or maybe even some boxwoods. Before I proceed, however, I'd like to solicit other ideas. The area in question is mostly shaded for most of the day, so anything requiring full sun isn't an option. Low maintenance is ideal - if I just have to trim some shrubs once/twice a year I'll be more than happy.
Suggestions welcome, and thanks in advance.
Joe in PA.