A temporary speed restriction always applies to the entire length of the train.

• A. False
• B. True
• C. It may apply to a portion of the train
• D. It depends on the jurisdiction

Answer: (A)

Temporary speed restrictions are tied to a defined block of track, usually due to track conditions or work in progress. They don’t automatically slow every car on every train forever. The rule applies to the train as it passes through the restricted section: the portion of the train that is within that segment must operate at or below the TSR, and the restriction remains in effect until the entire train has cleared the restricted track. If the train is longer than the restricted segment, only the portion within that segment is constrained at any moment, and the restriction ends when the tail clears the block. This is why the statement isn’t always true.