There is a system that I would describe as a system of signals in the cabin. These signals appear on a screen, which allows the crew to see the next signal and to know what restrictions are coming up, in terms of speed, for example. But no Canadian railway has that system. We are really looking into this to see how PTC is working in the United States.
First of all, under the act, as it stands today, railway companies could be forced to implement PTC. No amendment would be necessary.
In any case, we are keeping an eye on how the technology is evolving. Once the problems with the system have been ironed out and the cost analysis is complete, we will have a much better grasp of the situation and access to a much cheaper system, I think.