The way that Transport Canada manages the national oversight plan each year, which is a key part of the work that is done to maintain the oversight of the railway safety regime and other safety regimes, is to do a national oversight plan. That plan looks at what the risk factors are; what is happening with companies; what's been the history, the records, etc; and as we get these new leading indicator data we will be able to incorporate elements like that.
As you look at that you develop a plan for what the risk-based inspection plan is: what our highest risks are, what the intensity is, where the locations are, and where that inspection activity should take place. It includes a variety of types of oversight, including planned inspections and reactive inspections, where you see an incident of some kind occurring or an event that requires more investigation, or simply a company that has had a compliance problem or a safety issue that you're following up on.
There's a wide variety of work. That work is put together each year into a national oversight plan, and then it is applied. That national oversight plan largely gives us the number of inspectors that you need to do that. As that changes over time, you have to review and look at what your requirement is, but generally it stays on a relatively stable basis from a year-to-year requirement.
There are some other requirements that are included in our analysis as well, but those are the main ones.