CDL Practice Exams

To get a commercial driver's license (CDL) Class A or Class B in the United States, you must pass a knowledge test and an air brakes test. The air brakes test is crucial because it ensures that you understand how air brake systems work and how to properly inspect, maintain, and use them. Failing this test may prevent you from operating vehicles equipped with air brakes.

Hazmat Endorsement?

The CDL (Commercial Driver's License) is a type of driver's license required in the United States for individuals who operate commercial motor vehicles. To obtain a CDL, an individual must pass knowledge and skills tests specific to the type of commercial vehicle they will be driving.

Air brakes are commonly used on heavy vehicles, such as trucks , trailers and buses. Here is how air brakes work on a truck trailer:

Hazmat Endorsement?

The combination CDL test is a type of exam that is required for individuals who want to operate combination vehicles, such as trucks with trailers. To obtain a combination CDL license, you will need to pass both a general knowledge test and a combination test.

A CDL (commercial driver's license) Tank Endorsement allows a driver to operate vehicles that are designed to transport liquids or gases in bulk, including tanker trucks and other types of tank vehicles. To obtain a CDL Tank Endorsement, a driver must typically pass a knowledge test and a skills test.

To obtain a Commercial Driver’s License (CDL) in the United States, passing the **CDL General Knowledge Test** is a critical step. This exam assesses a candidate's understanding of road safety, vehicle operation, and the rules and regulations that apply to commercial driving.