I don't know AZ law, but doesn't the driver have a duty to use a reasonable level of caution to avoid hurting others, regardless of who has the right of way? For example, looking at the road while driving might be within reasonable levels of caution.
Where I'm at (Sweden, so far away and possibly a very different legal situation), right of way is not an excuse for negligent driving. You don't get to run people over unpunished just because you have the right of way if it could have been prevented by paying proper attention.
Where I'm at (Sweden, so far away and possibly a very different legal situation), right of way is not an excuse for negligent driving. You don't get to run people over unpunished just because you have the right of way if it could have been prevented by paying proper attention.