there's a similar issue with lanes. i grew up in a county with twisty mountain roads, and even in the flat valley areas roads tended to be more like a lane and a half wide rather than two. none of these roads had lanes painted and it was fine. if you saw someone coming and the road was too narrow, you both slowed down and eased past each other, and it's much safe to drive in the middle of the road on the twisty mountains, you just have to be situationally aware of oncoming traffic.
someone from the state saw and freaked out, and lanes were painted. they were too narrow and not safe, but they had lanes!
someone from the state saw and freaked out, and lanes were painted. they were too narrow and not safe, but they had lanes!