Which of the following transmissions does NOT need to be repeated by the employee receiving it?

Yard switching operations do not need to be repeated by the employee receiving the transmission because they typically involve routine, localized activities that are clear and understood within the context of the operation. These instructions are often straightforward and based on established procedures, which helps minimize the risk of miscommunication.

In contrast, train arrival times, safety concerns, and signal changes are critical pieces of information that require confirmation to ensure safety and operational efficiency. Repeating these types of transmissions helps to verify that they have been correctly understood, which is essential in preventing potential errors that could jeopardize safety. For yard switching operations, however, the reliance on established protocols and familiarity among crew members reduces the necessity for repetition, streamlining communication within that specific context.