When operating on a grade where a constant level of braking is required for long distances, how should brake pipe reductions be made?

In scenarios where a constant level of braking is needed over long distances, gradual and controlled braking is essential. Making a minimum initial brake pipe reduction followed by further reductions of 2 psi allows for more precise adjustments to the train's speed. This method helps in providing adequate braking force without overwhelming the system, which can lead to a loss of control or create oscillations in the braking force, especially on a grade.

By starting with a minimum reduction, the train operator can assess the train's response and adjust the braking force incrementally. This approach also allows for more effective management of the train's dynamics and ensures that the braking system maintains a steady output as the train descends or travels on the grade. It prevents the issues that can arise from a too-aggressive braking strategy, such as rail skid or unnecessary stress on the braking components.

This technique of making small, manageable reductions is crucial when operating under conditions that require a sustained level of braking to maintain safety and stability throughout the journey.