It makes no difference what the speed limit is.
There will always be people that will go over it.
There will always be people that will go under it.
There will always be a hundred other factors that can contribute to accidents.
$1:
the multi-vehicle crash that closed the highway at the Great Bear Snowshed
It seems to me that that is a section of that highway that is a frequent one for accidents. It's one of the few sections that has a few curves.