As Daniel mentioned, under the grade crossings regulations there is a shared responsibility. Certainly the railways' view is that there is an obligation to have safe crossings. One of the problems we have is that there are very many crossings. Often they're private crossings. As I mentioned, some of those that are private don't have any kind of agreement in place and there is no record of any kind of ownership sharing.
It's a huge spectrum, to answer your question. It's impossible to cite just one specific instance, because it's a big spectrum.