During dead-in-tow movement of a High Speed Trainset, what should be the setting of the emergency magnet valve?

During dead-in-tow movement of a High Speed Trainset, what should be the setting of the emergency magnet valve?

• A. IN
• B. OUT
• C. OPEN
• D. CLOSED

Answer: (A)

The key idea is to keep the braking system in a safe, stable state while the High Speed Trainset is moved without traction. Setting the emergency magnet valve to IN places it in the prescribed standby position for dead‑in‑tow, which prevents unintended activation of the emergency brake or unwanted venting of the brake pipe as the train is towed. The other states would not align with the towing procedure and could cause the brakes to engage or release unexpectedly, creating unsafe conditions during movement.

The key idea is to keep the braking system in a safe, stable state while the High Speed Trainset is moved without traction. Setting the emergency magnet valve to IN places it in the prescribed standby position for dead‑in‑tow, which prevents unintended activation of the emergency brake or unwanted venting of the brake pipe as the train is towed. The other states would not align with the towing procedure and could cause the brakes to engage or release unexpectedly, creating unsafe conditions during movement.