AZ Melt Training" typically refers to specialized driver training in the Canadian province of Ontario for those pursuing a career as a commercial truck driver with an AZ license.
The Air Brake Endorsement (Z) is a required certification in Ontario, Canada (and other provinces) for drivers who operate vehicles equipped with air brake systems.
An AZ license is a commercial driver's license in Ontario, Canada, that permits individuals to operate any truck/tractor-trailer combination, including vehicles exceeding 4,600 kilograms (10,000 pounds) and those with air brakes.
DZ License Training in Ontario, Canada, is a professional driver training program that prepares individuals to obtain their DZ license, which allows them to legally operate straight trucks and similar heavy vehicles.