Where must the emergency function of an operable 2-way end of train device be tested?

The emergency function of an operable 2-way end of train device must be tested at the point of installation. This requirement emphasizes the significance of ensuring the device operates correctly before it is put into service. Testing at the installation site helps to confirm that the equipment is functioning as intended, allowing for reliable communication and safety features to be confirmed right after it has been set up. By verifying this functionality at the outset, it minimizes the risk of malfunction during actual operation, which could potentially compromise the safety of the train and its operations.

Testing at other locations, such as the final destination, the initial terminal, or en route, would not be as effective because it could miss issues arising from the installation process itself. Proper testing at the point of installation is crucial for maintaining operational safety standards.