Thank you for your question.
The exemptions, and the use of new technologies to replace traditional inspections are a very important issue, because these new technologies are likely an outstanding opportunity to improve railway safety.
I'm saying this because that's what we at CN did, with two tests allowing temporary Transport Canada exemptions. The first was an autonomous inspection of a stretch of railway tracks via a wagon containing high-technology equipment while the train was transporting other goods. The second used inspection portals, which basically photographed the four sides of the entire train. I believe it was in the Winnipeg area that we tested a portal for the first time.
In both instances, the use of algorithms and artificial intelligence did an excellent job of identifying and rapidly rectifying minor and major problems.