Drivers must obtain a Class A or B CDL to operate a CMV with air brakes. The specific class of CDL required depends on the type of vehicle being operated.
* Class A CDL: Required to operate any combination vehicle with a GVWR of 26,001 pounds or more, or any vehicle designed to transport 16 or more passengers, including the driver.
* Class B CDL: Required to operate any single vehicle with a GVWR of 26,001 pounds or more, or any vehicle designed to transport 15 or fewer passengers, including the driver.
In addition to the CDL, drivers must also obtain an Air Brake Endorsement. The Air Brake Endorsement is a special endorsement that must be added to the CDL in order to operate a CMV with air brakes. To obtain the Air Brake Endorsement, drivers must pass a written test and a skills test.
The written test covers the knowledge and skills necessary to safely operate a CMV with air brakes. Topics covered on the written test include:
* The principles of air brake operation
* The proper use of air brakes
* The maintenance and inspection of air brakes
* The safe driving practices for vehicles with air brakes
The skills test covers the ability to perform basic driving maneuvers with a CMV with air brakes. Topics covered on the skills test include:
* Starting and stopping
* Backing
* Turning
* Lane changing
* Vehicle control
* Accident avoidance
Drivers who successfully pass both the written test and the skills test will be issued an Air Brake Endorsement. The Air Brake Endorsement is valid for five years and must be renewed every five years.
