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Front #32
ABTH 103.7.6
A crew is operating a loaded coal train on a descending grade. If retaining valves are necessary to control train speed, in which position should they be placed?
Answer: High Pressure (HP)Feedback: When retaining valves are used to help control train speed, use High Pressure (HP). Slow Direct (SD) should not be used. Low Pressure (LP) is only used for empty cars. This is a loaded coal train, there are no empty cars, so the LP position must not be used.