Which horn signal is used to acknowledge a stop signal other than a fixed signal?

Which horn signal is used to acknowledge a stop signal other than a fixed signal?

• A. The horn signal for Acknowledgement of any other signal not otherwise provided for.
• B. The horn signal for Acknowledgement of a Stop Signal other than a fixed signal.
• C. The horn signal for Approaching Roadway Workers.
• D. The horn signal for Acknowledgement of any other signal not provided for.

Answer: (B)

When a stop signal is given that isn’t a fixed device, there is a dedicated horn signal to acknowledge that specific instruction. Using this stop-signal acknowledgment is important because it clearly communicates receipt of a non-fixed stop instruction (such as one from a flagman or dispatcher) and avoids ambiguity with other signals. A generic acknowledgment for any other signal would be too broad and could be misinterpreted, whereas the stop-signal-specific acknowledgment leaves no doubt that the train has recognized and will comply with the stop instruction. The signal for approaching roadway workers is a different requirement and involves a separate safety signaling pattern.

When a stop signal is given that isn’t a fixed device, there is a dedicated horn signal to acknowledge that specific instruction. Using this stop-signal acknowledgment is important because it clearly communicates receipt of a non-fixed stop instruction (such as one from a flagman or dispatcher) and avoids ambiguity with other signals. A generic acknowledgment for any other signal would be too broad and could be misinterpreted, whereas the stop-signal-specific acknowledgment leaves no doubt that the train has recognized and will comply with the stop instruction. The signal for approaching roadway workers is a different requirement and involves a separate safety signaling pattern.