Just to answer your question, at the moment what we're waiting for is legal advice on who is allowed to listen to these recordings. What they've tried to achieve in the past few years was probably voluntary agreement, whereas the union and the company would agree on a protocol that probably the recording could be used for purposes other than disciplinary action, such as proficiency testing. Even the TSB at this time is not sure whether these recordings are privileged to the TSB only.
They should be in a position within about two weeks to give us final legal advice. Without that legal advice, it's very hard to get the working group together to work on that issue, because they don't have clear parameters. After we have that, and let's say only the TSB is allowed to listen to these tapes, we'll know better where we're going with this.
It can lead to safety improvement based on what you find on these tapes, but for the most part, it's an investigation tool. There are only a few accidents. For all the derailments that occur past the locomotive, usually you will not get any voice indication that something has gone wrong, because the train goes into emergency. The crew just stops and walks back in the train.
We're seriously looking into it. Honestly, if the legal advice comes back that only TSB can have access to these tapes, we may have no option at the end other than regulating.