After releasing hand brakes on the train at McPherson, what must be checked before departing?

When preparing a train for departure after releasing hand brakes, it is crucial to check air brake functionality. This ensures that the air brake system is fully operational and can effectively stop the train when necessary. Air brakes rely on compressed air to function, and confirming their readiness is vital for safety. If the air brake system is not operating properly, it poses a significant risk during transit, as the train may not be able to stop in an expected manner, especially in emergency situations or when descending grades.

In addition, ensuring the functionality of the air brake system often includes checking that the brake pressure is within the required range, and that all components of the brake system, such as the brake cylinder and hoses, are in good condition and properly sealed. This check is fundamental to maintaining overall train safety and effectiveness in emergency braking situations.