Unfortunately, you're going to have to rely on anecdotal evidence because the number of carloads that take advantage of the regulations is really small. We're talking well under 1% of your overall carload. If you're just looking at that as your point of comparison, I would say it's probably a little too small and not robust to draw inferences from. However, I would encourage you to go out and try to get information from shippers to see if the regulations, overall, have modified and changed behaviour so they don't have to rely on the regulations or the dispute process.
On September 20th, 2016. See this statement in context.