I'm still so angry & shaken up over this.
As a mother, I'm grief stricken over the needless suffering of this family, their friends and community.
As a responsible adult, I time my morning commute to avoid as many school buses as possible. I leave earlier than I have to. Unlike where this happened, which appears to be a relative straightaway with good visibility, my route to work is full of blind curves and blind hills. Kids are usually in the blind spots or on a corner I can't see around. One stop is at a 90 degree angle, and yep, you guessed it, the bus picks up a student right at the elbow.
Even though I have a good idea of the timing of the buses and their approximate stops between home and work, I still use caution in case their schedule changes or they're a little bit late/early due to road conditions, etc. I'm mindful of school buses no matter what, except in the summer. I've even gone so far to call the school department two towns over to find out if there were any route/bus schedule changes when they opened their new consolidated school so I could rearrange my schedule if need be.
I know some folks will probably say I'm overly cautious, but I'm of the belief there's no such thing as being too careful when it comes to our kids' safety getting on and off the school bus.
ETA: My rule of thumb is when in doubt, stop.