During which weather conditions is a Running Air Brake Test particularly crucial?

The running air brake test is especially critical during winter weather conditions that may lead to snow or ice build-up. In colder temperatures, the formation of ice or snow on the train and track can significantly affect braking performance. Ice accumulation can lead to reduced grip on the wheels, and snow might obstruct necessary brake components. Conducting a running air brake test in these conditions ensures that the brakes are functioning properly and can respond adequately to prevent accidents. It is essential to verify that the braking system is fully operational to maintain safety and control, as the ability to stop effectively is compromised when traction is diminished due to ice or snow. Therefore, ensuring the brakes are in optimal condition during winter weather is crucial for safe operations.