Some people here may be aware of a recent RCMP investigation into police brutality regarding the Vancouver Police Department. The RCMP concluded that there have been a number of serious incidents of police brutality. Jamie Graham, the chief constable of the Vancouver Police Department, decided to conduct his own internal review, which absolved everyone involved in the incidents specified by the RCMP investigation. So I think that's just one good example of the effectiveness of self-regulation.
At the risk of appearing to be cynical, I suspect that probably the essential policy controlling this self-regulation of safety procedures is uphill slow, downhill fast; tonnage first, and safety last.