There are no accidents, only collisions.
As long as society at large sees that the consequences for killing someone with a car can be a slap on the wrist, it is injustice.
Justice is a difficult topic. It would be one thing if this was the first car crashing into a bicycle ever, and the mayor, governor, and president all decried the tragedy and closed the roads until improvements could be made. Then i could see giving the driver a misdemeanor since society is taking responsibility and justice is being done.
Is this another day in the life in America? Maybe with more serious consequences for the driver, there would be political will to actually change things and prevent these tragedies.