Who must be informed when air brakes are cut out on a car?

The correct answer highlights the critical importance of communication in rail operations, particularly regarding the safe handling of air brakes. When air brakes are cut out on a car, it is essential to inform key personnel who are responsible for the safe movement and operation of the train.

The engineer, who directly oversees the operation of the train, needs to be aware of the status of all braking systems to adjust their control and ensure the train can be operated safely. Furthermore, the train dispatcher must also be notified because they are responsible for coordinating train movements on the railway network. Ensuring that both the engineer and the train dispatcher understand that the air brakes are cut out is crucial for maintaining safety protocols and preventing accidents.

Understanding this situation not only emphasizes the importance of proper communication but also reflects the protocols in place that prioritize safety for all rail operations. The involvement of both the engineer and the dispatcher demonstrates the collaborative effort required to ensure that all safety measures are adhered to, facilitating an effective response in case any issues arise during the train's journey.