A train in enroute must have operative air brakes on the rear car except for when:

A train in enroute must have operative air brakes on the rear car except for when:

• A. The rear car air brake is cut out.
• B. The rear car air brake is leaking.
• C. The train is on a sprinter track.
• D. The rear car is a caboose.

Answer: (A)

Braking must be able to be applied to every car in motion, especially the last car, to keep the train under control and prevent slack-induced issues or separation. The rear car helps ensure uniform braking and proper train handling by sensing brake pressure and receiving brake commands along the train. The only time you don’t require the rear car’s air brake to be operative is when that rear car’s air brake is cut out—meaning it’s disconnected from the brake pipe and cannot apply or release brakes. In that specific situation, the brake on that car isn’t available, so the crew relies on the rest of the train and any applicable rules or restrictions to proceed safely. Leaking, sprinter-track considerations, or whether the rear car is a caboose do not constitute the allowed exception to the rule.

Braking must be able to be applied to every car in motion, especially the last car, to keep the train under control and prevent slack-induced issues or separation. The rear car helps ensure uniform braking and proper train handling by sensing brake pressure and receiving brake commands along the train.

The only time you don’t require the rear car’s air brake to be operative is when that rear car’s air brake is cut out—meaning it’s disconnected from the brake pipe and cannot apply or release brakes. In that specific situation, the brake on that car isn’t available, so the crew relies on the rest of the train and any applicable rules or restrictions to proceed safely.

Leaking, sprinter-track considerations, or whether the rear car is a caboose do not constitute the allowed exception to the rule.