With the brake handle in the extreme left position, what is the valve status?

When the brake handle is positioned in the extreme left position, it indicates that the valves associated with the braking system are in the release status. This position allows for the release of air pressure or other mechanisms in the braking system, enabling the train to move freely without application of the brakes.

Understanding the operation of the brake handle is crucial for train safety and performance. When the handle is fully to the left, it effectively ensures that the brakes are not engaged, permitting a smooth operation. In contrast, other positions of the brake handle would either partially apply the brakes or engage them fully, which would not be the case when the handle is fully towards the left.