Who is prohibited from copying a Form D on a moving train?

The prohibition against copying a Form D on a moving train is in place to ensure the safety and reliability of train operations. An employee operating or piloting a moving train, such as an Engineer, is responsible for controlling the train's movements and ensuring that it operates safely according to the signals, rules, and instructions provided.

Copying a Form D—a type of temporary authority that allows a train to operate under specific conditions—while the train is in motion could distract the operating crew and lead to a failure in adhering to critical operational protocols. The focus of the pilot or operator must be entirely on the management of the train and the adherence to safe operating practices, which can be compromised if they were to attempt to copy or relay information from the Form D during active movement.

This rule emphasizes the importance of maintaining situational awareness and ensuring that all required safety procedures are followed without distraction. Other personnel, such as Dispatchers or on-duty employees, can receive and handle these communications when the train is not in motion, allowing for a safer working environment.