How are speed restrictions typically communicated in a track warrant?

• A. As a maximum speed within the authority, often with a speed value and may include temporary restrictions for curves or signals.
• B. As a fixed posted speed limit at each milepost.
• C. As a speed range only.
• D. Only for passenger trains.

Answer: (C)

Speed restrictions in a track warrant are expressed as a permissible speed range within the authorized track area. This recognizes that different parts of the warranted route can have different conditions—curves, gradients, track work, or temporary limitations—which means the train must operate at a speed somewhere inside a defined band rather than at a single fixed number for the entire authority. The crew uses the range to stay within safe limits across the whole warrant, adjusting for specific segments or temporary notes (like curves or signal-related restrictions) as needed. Other approaches, such as tying operation to fixed milepost limits, restricting only to passenger trains, or relying on a single maximum across the entire area, don’t align with how warrants account for varying conditions along the route.