The Difference Between the Two Major Commercial Driving License Classes in Ontario: AZ vs. DZ

September 8, 2023
If you are thinking about pursuing a career as a truck driver, in Ontario you may have come across the terms AZ and DZ licenses. It can be a bit overwhelming to differentiate between these two types of licenses especially if you are new to the trucking industry. In this blog post we will explain the distinctions between AZ and DZ licenses. Help you determine which one is best suited for your needs at Truck Driving School Brampton.

What Is the Difference Between AZ and DZ Licenses in Ontario?
Before we dive into the details, let us first explain what the "Z" stands for in AZ and DZ licenses. The "Z" designation represents the air brake certification, a crucial component of both licenses, requiring twelve hours of training.

AZ License:
If you have aspirations of becoming a long haul truck driver, in Canada you will need to obtain an AZ license. This particular license grants you the authority to operate a motor vehicle and towed vehicle where the towed vehicle exceeds a total gross weight of 4,600 kilograms (10,000 lb). Having an AZ license gives you the flexibility to drive any type of motor vehicle including truck and trailer combinations falling under the category. Additionally it is worth noting that not all truck driving duties will require you to handle loading or unloading tasks. However it is important to understand that possessing an AZ license does not authorize you to drive buses;, for that purpose a C Class certification is necessary.

DZ License:
Obtaining a DZ license is generally easier than earning an AZ license, and there is one key reason for this. With a DZ license, you can drive a motor vehicle exceeding 11,000 kilograms gross weight or registered gross weight or any truck or combination provided the towed vehicle is not over 4,600 kilograms, eliminating the need to back up a trailer during your test. DZ licenses are typically recommended for individuals searching for careers in municipal work. While it is a rewarding field, it is important to acknowledge the limitations. DZ license holders can only operate heavy vehicles that fall within the same weight range, which might result in fewer job opportunities compared to those with an AZ license.

How Do I Obtain an AZ or DZ License?
To embark on your journey toward an AZ or DZ license, you will need to meet certain eligibility criteria, which include:
  • Being a minimum of 18 years old
  • Holding a valid Ontario class 'G' license or higher
  • Passing a vision test
  • Possessing an OSSD grade 12 diploma (or higher) or proof of grade 10 English equivalency
  • Submitting an MTO-approved medical form
  • Passing a knowledge verification test on rules of the road and road signs

Once you meet these criteria, you can start your training that is part of the MELT Program. This program, lasting five weeks, is designed to prepare you for the AZ or DZ license test. At Centurion Truck Training Academy, we understand that every student is unique, so we create personalized plans to ensure you get the most out of the program.

After completing the program, you can attempt the Class A or D license test. If you have any questions or are interested in enrolling in our Truck Driving School Brampton, do not hesitate to reach out to us. We are here to help you kickstart your career as a commercial truck driver.

  • Which license allows me to drive long-haul trucks in Canada?

    The AZ license permits you to drive long-haul trucks weighing over 4,600 kg or 10,000 lbs.


  • Can I drive buses with an AZ license?

    No, you will need the C-Class certification to drive buses.


  • What are the key differences between AZ and DZ licenses?

    The main differences include the vehicle weight limits and whether you are required to load/unload the truck. AZ licenses allow for heavier vehicles and may not require loading/unloading, while DZ licenses have weight restrictions and include loading/unloading responsibilities.

  • What are the eligibility criteria for obtaining an AZ or DZ license?

    You must be at least 18 years old, hold a valid Ontario class 'G' license or higher, pass a vision test, possess an OSSD grade 12 diploma (or equivalent), submit an MTO-approved medical form, and pass a knowledge verification test on road rules and signs.