That's a very, very good question.
Shippers have a number of recourses under law, and one of those is final offer arbitration. We have been focused on liability in our negotiations, and in a number of cases these contracts have been brought forward for final offer arbitration, which is a very blunt instrument. An arbitrator looks at your offer or the other offer and often makes a determination on price without any consideration of the other clauses. One of those clauses would relate to liability, and we are trying, through those clauses, to incent shippers of dangerous goods in terms of the means of containment—the tank car—to ensure that they're moved as safely as possible.
Jean, you are an expert. I don't know if you want to pick up on that.