What is the maximum mileage a Cycle Train may operate before another Class I Air Brake Test must be performed?

Answer: C — 3000 miles

The maximum mileage a Cycle Train may operate before another Class I Air Brake Test must be performed is 3000 miles. This requirement is set to ensure that the air brake systems are regularly checked and maintained, particularly given the critical role of air brakes in train safety and operation. Regular testing helps identify potential issues before they become severe, reducing the risk of malfunctions while the train is in service. Adhering to these mileage limits ensures compliance with safety regulations and operational standards, which ultimately ensures the safety of both passengers and cargo transported by the train.