Which of the following trains must undergo a Running Air Brake Test?

The reason passenger trains must undergo a Running Air Brake Test is due to the critical importance of ensuring passenger safety and comfort. Passenger trains often carry many people, and reliable braking systems are essential to prevent accidents and ensure timely stops. The running air brake test is a specific procedure that evaluates the functionality of the air brake system while the train is in motion, allowing for immediate detection of any issues that could affect the train’s ability to stop safely.

In contrast, the requirements for freight trains, maintenance trains, and trains with known defects may vary based on specific regulations or operational procedures. While they can also be subjected to tests, the emphasis on safety protocols for passenger trains mandates regular running air brake tests to enhance reliability and maintain safety standards for all individuals on board. This distinction underscores the heightened responsibility associated with transporting passengers compared to other types of trains.