On rail, there are four watch-list issues. Some of them are related to the Lac-Mégantic investigation, so they came on the watch-list in 2014 or 2016. Following signal indications has been on the watch-list since 2012. Some of the air ones have been on longer, since 2010, such as the risk of collision on the ground and the risk of runway overrun. These are not easy issues to solve. If they had been, they would have been solved a long time ago, so we are working both with Transport Canada and with industry to try to provide that compelling argument for change so that action will be taken.
On May 1st, 2018. See this statement in context.