What is required before trains and engines may operate over tracks submerged in water?

Before trains and engines can safely operate over tracks submerged in water, it is essential that the track has been inspected and verified as safe. This is critical because submerged tracks can be compromised due to water-related damage, such as erosion, misalignment, or structural failure. An inspection ensures that any potential hazards are identified and addressed, thereby preventing accidents and ensuring the safety of both the train and its passengers.

While improving weather conditions, notifying crew members, and reducing train speeds might seem important, they do not directly address the structural integrity of the track itself. Without confirming that the track is safe after any flooding or water exposure, operating trains over such tracks could lead to disastrous consequences, making the inspection and verification process a top priority.