That's a false analogy, and I'll tell you why.
The rail system is set up in the following way. The regulations are in place to ensure that people follow them. We expect that companies will follow them. We have inspectors to ensure that the railways are doing what they need to do. They also are subject to the Transportation of Dangerous Goods Act, and we have inspectors in that area as well. Finally, we have a safety management system in place indicating that the companies must embed safety management in their culture. They do that as well. We audit that as well.