What does the presence of a triangle on the MAL bar mean in terms of train operation?

The presence of a triangle on the MAL (Movement Authority Limit) bar indicates that there is a slow speed order or work zone ahead. This signal alerts train operators to proceed with caution, and to reduce speed as necessary due to potential hazards or changes in track conditions.

Understanding this signal is crucial for maintaining safety and ensuring that trains operate within safe limits as they approach areas where there may be construction, maintenance work, or other operational restrictions in place. It emphasizes the importance of vigilance and adherence to speed limits in specific zones to mitigate risks and ensure the safety of passengers and crew.

As train engineers, recognizing these signals and responding appropriately is essential for safe train operation and compliance with railroad rules and regulations.