To be clear, our mandate includes accidents and incidents in the air, rail, marine and pipeline modes under federal jurisdiction. There would be changes required to our mandate and to other legislation to take on road accidents. It's really up to parliamentarians to decide whether commercial buses should be under the mandate of the TSB.
I would note that the National Transportation Safety Board in the United States, our equivalent agency, and some European countries and possibly others do have that mandate and do investigate commercial road accidents involving commercial passenger buses and trucks.