If a train uncouples when taking a "stretch", what should the yard train operator do?

When a train uncouples during a "stretch," the yard train operator must follow best practices to ensure safety and operational integrity. Recoupling at normal speed and attempting another "stretch" can be deemed as a practical response because it allows the operator to realign the train cars effectively and ensure that they are properly connected before proceeding with operations.

This approach demonstrates a commitment to maintaining safe procedures, as recoupling at a cautious speed minimizes the risk of damaging the equipment or causing additional issues, such as misalignment. Moreover, after ensuring the couplings are secure again, the operator can safely attempt the "stretch," confirming the reliability of the connection.

Other options like stopping to call for assistance can lead to unnecessary delays, while leaving cars uncoupled is not a safe practice in a yard setting. Attempting to adjust tension and try again could also be unwise without ensuring proper coupling first, as it might not effectively address the issue if the cars are not correctly aligned. Thus, the selected option promotes a proactive and safe approach to managing the situation.