What is the maximum speed authorized under Rule 563?

Under Rule 563, the maximum authorized speed is set at 59 miles per hour. This rule typically applies in specific situations where a higher speed limit is imposed for certain types of equipment, vehicles, or conditions. Understanding the maximum speed allowed under this rule is essential for maintaining safety and adherence to operating guidelines on the railroad.

The choice indicating 59 mph aligns with the established regulatory framework that allows trains to operate at this speed under the prescribed conditions. Compliance with this speed limit helps minimize risks associated with train operations and ensures safe maneuverability through various territories.

In contrast, the other options propose either a lower maximum speed or suggest no restrictions at all, which does not accurately reflect the specifics outlined in Rule 563. This emphasizes the importance of knowing the precise speed limits associated with particular rules and conditions in railway operations.