> is systemic and harder to predict and deal with

Is it actually harder to deal with? About 1/6 of fatalities are drunk drivers[2], and they cause another 1/6 of of car accident fatalities[1]. Almost half of all front-seat (driver + front passenger) fatalities aren't wearing seatbelts while on average 90% of Americans do wear seatbelts[2]. There's no way of solving either these problems without identifying people individually and improving their behavior, which is a pretty intractable issue.

1. https://www.cdc.gov/motorvehiclesafety/impaired_driving/impa...

2. http://www.iihs.org/iihs/topics/t/general-statistics/fatalit...