We are well aware that the equipment exists, but it is not certified by Transport Canada.
That technology has indeed been used since the 1990s. Transport Canada is mainly focused on providing training for users and ensuring that the operating conditions for the equipment are properly laid out in the regulations. Transport Canada is also responsible for management and risk analysis. That is one of the tools the department has to ensure that the equipment is used safely.
As for inspections, the Transport Canada inspectors look at the use of that equipment and other equipment in switching yards and take action when necessary in compliance with the law.