Usually reversing up a pavement driver will do so very slowly.
Always enough time for ppl to move out of the way.
In this case, we don't know exactly what happened.
The driver of the lorry is in deep trouble, because his vehicle was
on a pavement, and he caused a death. I think he and his family
would also be deeply sadden by this accident.
The deceased boy aunt would also go 'If only....' she had pulled
the boy or held his hands, this would'nt happen. She would be
deeply traumatised.
This is a tragedy, there is sadness all around.