Diagram. Orange is the property line. D are the two driveways. Crosshatch area is a gravel turnaround spot. The circle on the property line is a power pole.

Got a situation with the neighbors where they are using our driveway because they have a lot of people coming over and it's easier for them to use our driveway then use their driveway. Each driveway is about 75 ft. Except there's no easement and we've told them not to use our driveway because they don't have permission. I have checked the plat maps etc. We've sent them letters from our lawyer and talked to them several times about this. It's pretty clear that they have no legal right to use our driveway. Today I confronted somebody who was driving on our driveway and she told me to shut up (3 times) instead of actually apologizing or asking for permission.

I'd like to put in something like some bollards that are maybe 2 feet high, 3 feet apart. 4 of them would be plenty. Of course I will look and see what distance I have to put them from the property line. But I don't want it to look bad.

Would be nice if they were removable but lockable too.

Also considered a short plastic curb that would be about maybe 8 in high... Enough to high center any sedan that drives over it?

Anyone got a suggestion for this that will look decent but also be sturdy enough to damage a car that drives into them intentionally? We don't want to do a fence because it would probably get damaged by the neighbors intentionally. I'll be doing this myself.