If a speed limit does not exceed 30 MPH, what is this termed?

In the context of railroad operations, when a speed limit does not exceed 30 MPH, it is categorized as "Limited Speed." This term is used to designate a speed that is restricted for safety reasons, allowing for more caution in operations, such as in areas where there may be risks or obstructions. Limited Speed typically encompasses speeds that ensure trains can stop within half the range of vision, thus providing a safety buffer for the crew and equipment.

While "Slow Speed" could be considered an option, this usually refers to even lower thresholds, often significantly below 30 MPH, and is typically associated with yard movements or similar operations. "Medium Speed" and "High Speed" are terms that reference speeds above the 30 MPH threshold, with specific definitions that pertain to elevated speed limits where different operational considerations are applied. Understanding these classifications helps ensure compliance with safety regulations and promotes safe railway operations.