Which term designates the maximum allowable speed as indicated by various signals and instructions?

Which term designates the maximum allowable speed as indicated by various signals and instructions?

• A. Speed, Restricted
• B. Speed, Authorized
• C. Operational speed
• D. Maximum speed limit

Answer: (B)

Authorized speed is the maximum speed a train is allowed to travel, as dictated by signals and instructive procedures from dispatch, timetables, or operating rules. This term directly captures the idea that the speed shown or mandated by a signal is the speed you may run at that point, not a general or conditional limit. If multiple signals or instructions apply along the route, you must follow the most restrictive authorized speed indicated, ensuring safe and compliant movement. Other terms describe different concepts: restricted speed refers to notably slower speeds due to conditions or requirements (not the standard maximum allowed by authority), operational speed isn’t the standard designation used here, and maximum speed limit is a general phrase, but the formal designation used in procedures is authorized speed.

Authorized speed is the maximum speed a train is allowed to travel, as dictated by signals and instructive procedures from dispatch, timetables, or operating rules. This term directly captures the idea that the speed shown or mandated by a signal is the speed you may run at that point, not a general or conditional limit. If multiple signals or instructions apply along the route, you must follow the most restrictive authorized speed indicated, ensuring safe and compliant movement. Other terms describe different concepts: restricted speed refers to notably slower speeds due to conditions or requirements (not the standard maximum allowed by authority), operational speed isn’t the standard designation used here, and maximum speed limit is a general phrase, but the formal designation used in procedures is authorized speed.