Two separate tests needed to perform the CDL brake test:

Two separate tests needed to perform the CDL brake test:

• A. Parking brake test/Service Brake test and Leak Test
• B. Parking brake test only
• C. Leak Test only
• D. Emergency brake test and leak test

Answer: (A)

Two separate checks are required to validate the CDL brake system: first, test the braking capability by evaluating both the parking brake (hold) and the service brakes (stopping power), and second, perform a leak test to ensure the air brake system has no leaks and can maintain proper pressure. This pairing makes sure the vehicle can stop reliably and the system remains airtight under operation. The other options fall short because they omit either the braking performance check (service/parking) or the leak check, or swap in an emergency brake test in place of the necessary service brake evaluation.

Two separate checks are required to validate the CDL brake system: first, test the braking capability by evaluating both the parking brake (hold) and the service brakes (stopping power), and second, perform a leak test to ensure the air brake system has no leaks and can maintain proper pressure. This pairing makes sure the vehicle can stop reliably and the system remains airtight under operation. The other options fall short because they omit either the braking performance check (service/parking) or the leak check, or swap in an emergency brake test in place of the necessary service brake evaluation.