As sad as it is, at least they were able to count time. Sorry if I offended anyone.
When I was an elder one of our MS struck and killed a homeless person who was wondering onto the street. He felt remorse, we conforted him, and life went on. He was not charged with any crime or traffic violation and we imposed no restrictions on him. There was no way he was responsible for the man's death.
When I was young a friend of the family from the congregation was a train engineer. He struck and killed at least one bystander. He felt remorse and went on with his life until he died.
Life is fragile. I am not sure how I would react if I was respnsible for the death of someone. Fortunately, that is not something I have had to deal with, at least as of now.