What does a blue flag indicate?

A blue flag is an important safety signal used in railway operations. It indicates that there are men working on or near the train equipment, requiring all trains and equipment in the vicinity to be stopped and not moved until the blue flag is removed. This signal is crucial for protecting workers from potential injury while they perform maintenance or repairs, ensuring that there is a clear and defined safety protocol in place.

In railroad operations, the use of color-coded flags helps to quickly communicate vital safety information, thereby minimizing the risk of accidents. Flags serve different purposes, and understanding each one fosters a safer work environment in the railway sector.