Arizona Driving Permit Written Practice Test 2025 - Free Driving Permit Practice Questions and Study Guide

To operate a commercial vehicle in Arizona, a driver needs to possess a specific type of commercial driver's license (CDL), and the answer indicating that all classes are necessary reflects the various levels of commercial driving privileges. Each class of CDL corresponds to different types of commercial vehicles:

- Class A licenses are required for drivers who operate combination vehicles (such as tractor-trailers or large trucks with trailers). This class allows operation of vehicles with a gross combination weight rating (GCWR) of 26,001 pounds or more, provided the towed vehicle weighs more than 10,000 pounds.

- Class B licenses are necessary for those who drive single vehicles with a weight of 26,001 pounds or more. This includes buses, large trucks, and vehicles designed to transport passengers.

- Class C licenses are issued for smaller commercial vehicles that do not meet the criteria for Classes A or B but still require a CDL, such as vehicles designed to transport hazardous materials or vehicles that transport 16 or more passengers, including the driver.

Since the question encompasses all types of commercial driving, the answer indicates that any of these licenses could be necessary depending on the type and classification of the commercial vehicle being operated. Thus, all classes contribute to the regulation of commercial vehicle