When operating in 409 territory, who must authorize a train to exceed its maximum speed due to a speed failure?

In 409 territory, a train must be authorized by the Train Dispatcher to exceed its maximum speed due to a speed failure. This authority is crucial because the Train Dispatcher has the overall responsibility for the safe and efficient movement of trains within their assigned area. They are equipped with comprehensive information regarding train locations, track conditions, and overall traffic management.

By requiring the Train Dispatcher to grant this authorization, the safety of operations is ensured. They can evaluate whether it is safe for a train to proceed at an increased speed based on real-time information and situational awareness. This ensures that all operational decisions are centralized and made with the necessary oversight, reducing the risk of accidents or complications from unauthorized speed changes.

The other roles mentioned, such as the Block Operator, Signal Operator, and Yard Master, do not have the authority to grant such requests pertaining to the operational speeds of trains on mainline tracks in this territory, as their responsibilities are more focused on specific operational areas and tasks rather than on the overall train movements and safety protocols.