If we look at the use by the railway companies, they can use it in two specific circumstances under Bill C-49. One is to investigate an incident or an accident that is not being investigated by the TSB.
The other is that on a random-sampling basis, as part of their safety management system, they can do samples to look at how crews are operating the train. During that period, they may identify procedural deficiencies or training deficiencies, on which they could then take action on a systemic basis to reduce risk.