What action must a crew take after an emergency brake application in Clear Signal of Rule 261 territory?

In Rule 261 territory, after an emergency brake application, the crew must prepare to stop at the next signal. This requirement is rooted in ensuring safety and adherence to operational protocols. The reasoning behind this is that an emergency brake application indicates a potential safety issue or hazard that may require immediate attention. By preparing to stop at the next signal, the crew can assess the situation carefully and ensure that both the train and the track are secure before proceeding.

The protocols in Rule 261 emphasize caution following any emergency situations. Therefore, preparing to stop allows the crew to place safety as a priority and maintain proper communication regarding the train's status. It provides an opportunity to inspect for any problems before moving forward, as the next signal may offer crucial information about track conditions or potential hazards ahead.