I sure hope the driver has a great group of folks to help through this time. Having the lingering questions "what if I had left my previous stop 30 seconds earlier or later?" "What could I have done different?"
Just having to live with it every day the rest of his (or her) life.
Then, maybe having to relive it in a Court of Law all over again.
Anyone in that area who knows this person, give all the support you can!