A non-blame culture way to look at it would be to ask why people fall asleep at the wheel and try to prevent it from happening. Can we make cars and roads that promote alertness? Can cars detect sleeping drivers and wake them up? Can they detect tired drivers and refuse to start? Why are people driving despite being sleepy in the first place? Are they working two jobs to make ends meet?

I am not opposed to blame culture per se, I think problems should be solved at the most logical level. Sometimes a systematic solution is the easiest, and sometimes removing jerks is the easiest.