Doesn't everyone who drives a vehicle with air brakes have an air brake certificate or equivalent? As I am from British Columbia I need an endorsement on my drivers license which shows that I have taken the required air brake course, driving an air-brake equipped vehicle without this endorsement will void the vehicle insurance if you are in an accident. Whether or not it is mandatory, a course on air brakes and how they function is a good idea for anyone driving a vehicle with air brakes.