Absolutely correct, the way we improve safety is by making the most dangerous people feel less comfortable.
I've read about some places where a rural highway leading into a town will narrow to ten foot lanes, waking drivers out of their daze because the driving environment is about to become much more complex. I wish I could remember where this was.
In my country, high traffic moderate speed (90km/h - 56 mph) sometimes go across rural villages where the speed limit is usually half that. Furthermore, drivers here are notorious for not giving a frack about speed limits. So some of those villages have experienced with various ways to narrow the road. Sometimes it plays only with perception, by adding for instance small plastic poles to separate the lanes. Sometimes it's chicanes or bumps.
I can't give figures on the effectiveness of this, but as a driver you instinctively slow down when the road appears narrower. It seems to me more effective than a sign on the side of the road.
The long forgotten irony in this meme is that cars used to be designed like this. There were no seat belts and the steering column was a rigid spear. It was practically designed to kill you.
Historical evidence suggests that there would indeed be fewer accidents but more car drivers would die (because even quite trivial bumps would be fatal), though pedestrians and cyclists would be safer. As someone who chooses not to drive, that sounds pretty good to me.
I've read about some places where a rural highway leading into a town will narrow to ten foot lanes, waking drivers out of their daze because the driving environment is about to become much more complex. I wish I could remember where this was.