I drive on a lot of rural roads in the UK, mainly Wales, most of the time I’m just happy when the road has space for two cars to squeeze through and some visibility for what’s coming around the corner of that rural lane. Actual physical lines separating the lanes? Oh boy it’s my birthday. Yet with all that, we have a death rate per 100 million miles of just over a third of somewhere like the US, so I’d imagine the size of cars and inadequate licence requirements are probably bigger issues for road safety