I believe that the requirements are very significant in terms of the engineering standards and the actual rules of the quality that has to be achieved. We would have to look at specific elements of exactly what is precluded or not included.
I would add that the inspection requirements have gone into much more detail over the years, and the technology has gotten much better. There's a considerable amount of technology that's used, including spectrum, to try to see if any cracks are developing in rail, and there's a variety of other technical aspects that are used by the railways. They are required to do that on their own. As well, Transport Canada does actual track inspections to make sure the quality is maintained.