We work closely with our U.S. counterparts, including the Association of American Railroads, or AAR. They work with us on accounting for the changes made to the tank cars. We take care of providing oversight. Once regulations come into force, we have to ensure that, when cars are inspected, the changes are made and the cars are transporting the right dangerous goods. We ensure that the products are properly classified and marked, so that they can be publicly identified. We also make sure that the dangerous goods are placed in the appropriate car. That is part of the oversight process we provide.
On March 21st, 2016. See this statement in context.