What is the proper test to ensure that the handbrakes will hold a train parked on a steep grade?

To ensure that the handbrakes will hold a train parked on a steep grade, releasing the air brakes and applying one point of power is the appropriate procedure. This method assists in verifying that the handbrakes are capable of immobilizing the train against the forces that would otherwise cause it to roll downhill.

When the air brakes are released, the full weight of the train is resting on the handbrakes. By applying one point of power, it effectively simulates the conditions that the train would experience if it were to start moving due to gravity. If the handbrakes are functioning properly, they should hold the train securely in place under this test, ensuring safety when the train is parked on an incline.

In contrast, other methods, such as removing all handbrakes to check for balance, would not provide an accurate assessment of the handbrakes' effectiveness. Checking air pressure and applying full power does not directly test the handbrakes but instead focuses on the air brake system. Gradually increasing the speed and monitoring brakes is not suitable because it pertains to operational conditions rather than testing the capability of the handbrakes when the train is stationary.