Trucker Country, Layover.com, Tests-Guide.com and TruckersReport.com are some companies that offer training tools for the air brake endorsement portion of the commercial driver’s license exam. These companies provide materials, such as flash cards, study guides and practice tests, for various license exams and endorsements. Many local departments of motor vehicles provide free practice materials as well.
Drivers can also refer to local state commercial driver’s license manuals to study for the exam. These manuals are available at local Department of Motor Vehicles, Department of Transportation, Driver Services, or Bureau of Motor Vehicles offices and at Test-Guide.com. These manuals also provide local information on license eligibility requirements, application procedures and fees, and any restrictions or exemptions.
All Class A and Class B drivers must obtain the air brakes endorsement to legally operate commercial vehicles with air brakes under the Commercial Motor Vehicle Safety of Act of 1986, which the Federal government enacted in 1992. The exam tests the driver’s knowledge of how the braking system operates, the function of each component and troubleshooting methods. The test-taker must answer 80 percent or more of the questions on the test correctly to receive the endorsement. Drivers must also pass the driving skills test in a vehicle with air brake equipment.