These drivers get paid a premium for their qualifications, safe driving records, and high standards of health. Below are the steps involved in becoming a Hazmat hauler. How to Become a HAZMAT Truck Driver Step 1: Obtain a Valid Commercial Driver’s License There are a few stringent requirements to become certified to transport large quantities of hazardous materials. First of all, the successful applicant must have an active Commercial Driver’s License (CDL- Class A). State regulations on CDLs differ, but most require a learning period allowing you to practice driving with another CDL holder in the vehicle.