What is the proper buzzer signal for an airbrake test?

The proper buzzer signal for an airbrake test is characterized by four long signals. This specific sequence is universally recognized among rail operations, indicating the initiation of the airbrake test procedure. It is important for communication among personnel involved, ensuring that everyone is aware of the actions taking place and that necessary precautions are taken.

Using the correct buzzer signal helps maintain safety protocols, allowing for clear communication regarding the status of the train's braking systems. This signal ensures that any crew members and personnel in the vicinity recognize that an airbrake test is underway, which is critical for operational safety. Proper adherence to these signals is a key component of effective train management and safety protocols.