I recent years around here, they (the state and county highway departments) have been installing the rumble bar depressions on the centerlines of non-divided highways, as well as just over the white line on the right side of the right lanes. We've had an extraordinary number of either head-on collisions with people crossing center lines, or people running off the right side of the roads over the years. They're installing them with every repaying as they go along.
I've never hit the center ones through inattention, but I have hit the ones on the right side of the road. They snap you to attention instantly. Kinda makes me wonder how often I get to the side that I don't reailize. (You can intentionally hit them to give the kids simulated helicopter rides on the off ramps. Sounds just like it
). I consider myself a pretty attentive driver, especially when there are other cars around. It's those roads where there is no other traffic when the mind seems to back off a bit on the attentiveness. I'm looking for deer and tractors.
I've found in the couple of cars I've driven with the lane monitoring, the steering wheel shakes if you get too close to either lane line, and instantly makes you more attentive. And, it happened more times than I thought it would have, even with my perceived attentiveness. So I'm going to assume that I get too close to the right lane line more often than I realize, just based on the few times the lane alert shook my wheel.
I don't mind that feature.
