Some of the submitters who were prepared to put their views on record pointed out something that seems very obvious to many of us, that where you have designers designing components and manufacturers making them—say, for trucks and trailers, and coaches and buses which might be used as school buses or in public transport—it is very, very important that the designers are competent and that they follow best practice. And in order to demonstrate that they are competent, those designers must have sufficient professional development and training and certification of their own. Some of the submitters pointed out that in NZTA's current approach and in their practice, they have completely ignored the requirements for a professional practice aspect around certification of trucks and trailers and buses and other mechanical equipment, and instead chosen to, essentially, give a certain group of certifiers powers over others, and these certifiers are often people who are getting towards the end of their career. They may have learnt on the job. They may know what good welding and good technique looks like in the factory, but they haven't had the benefit of professional engineering oversight of their careers, and they haven't had the benefit of professional development. 