How will a key/alert train proceed if no defects are found after inspection?

When a key/alert train has undergone inspection and no defects have been found, it is typically mandated to proceed with caution at a reduced speed. In many railroad operations, this means that the train will not exceed a safe limit—often set at 30 MPH—to ensure the safety of the train, crew, and the track conditions. This reduced speed allows for any residual concerns to be managed and ensures that if any issues arise unexpectedly, the train will be able to react appropriately without jeopardizing safety.

This practice is a critical safety protocol that aims to mitigate risks associated with any potential undetected issues that could compromise the train's operation, particularly after being designated as a key/alert due to initial concerns. By adhering to this speed limit, the train can navigate through the rail network safely while still maintaining operational efficiency.