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Front #84
ABTH 100.10B
When conducting a Class 1A air brake test, what percentage of the air brakes must be operative? Select the best answer.
Answer: 100%Feedback: At designated locations, trains may receive a Class 1A Air Brake Test. 100% of the brakes must be operative. Any cars that release prior to the signal being given can be retested once. To pass retest, brakes must remain applied for no less than 3 minutes.