What is defined as Limited Speed?

The definition of Limited Speed is correctly identified as the maximum allowable speeds for different train types, which in this case are for passenger and freight trains. For passenger trains, Limited Speed does not exceed 45 MPH, while for freight trains, the limit is set at 40 MPH. This distinction is important as it considers the operational characteristics and safety requirements associated with different types of trains.

Understanding these speed limits is crucial for safe train operations, ensuring that trains can navigate track conditions safely while maintaining efficiency. It aligns with safety protocols and regulations that dictate how trains should be operated in various scenarios, reflecting the need for different handling based on train types. The other options either present incorrect maximum speeds or apply the same limit across all train types, which does not conform to the established definitions in operating rules.