What is the final step in uncoupling procedures for PA4 cars after all actions are completed?

The final step in the uncoupling procedures for PA4 cars is to separate the train and apply the brakes. This step is critical as it ensures that the cars are securely separated and will not inadvertently move apart during the uncoupling process.

Applying the brakes after separation is essential for safety; it helps to prevent any unintended movement of the cars that could occur if they are still linked together. This measure helps maintain control over the cars and ensures that they remain stationary until the next operational steps are implemented.

In the context of train operations, maintaining safety throughout the process is paramount, and completing the uncoupling by applying the brakes is a fundamental operational safety requirement.