I've been lucky to never have something like this happen to me yet.
A story to share from Hawaii...
Not to long ago (maybe a month or two?), supposedly a car had stalled on the road for whatever reason. A police man stopped on the side of the road to help the guy. Realize, the police man didn't have to do this. He could have just kept driving. Anyways, as the cop was getting out of the car, a 16 wheeler runs in the back of the cop car and the cop dies almost instantly, that or he died from the explosion that occurred not to long afterwards.
After research, it didn't seem the trucker was drunk, high, or distracted by the phone. He was probably only distracted by what was going on the side.