What is the normal position of the operating brake valve while running over the road?

In train operations, the normal position of the operating brake valve while running over the road is in the running release position. This position allows for free movement of the train without applying the brakes. When the valve is set to running release, it ensures that the brakes are not actively engaged, providing a smooth and efficient operation of the train as it travels.

Keeping the brake valve in running release while on the road helps maintain momentum, allowing the train to travel at optimal speeds and conserving energy. It also aids in reducing wear and tear on the braking system, as unnecessary brake application can lead to overheating and premature wear of brake components.

Other positions, such as emergency or applying brakes, would actively engage the brakes, which is not suitable for normal operation when the train is running. The handle-off position is also not appropriate since it would typically indicate that the brakes are not in a controllable state for operation. Thus, running release is the correct and operationally effective position for the brake valve while the train is in motion.