A single locomotive consist without cars attached must not exceed which speed?

A single locomotive consist without cars attached must not exceed which speed?

• A. 15 MPH
• B. 25 MPH
• C. 30 MPH
• D. 45 MPH

Answer: (C)

Moving a single locomotive without cars attached is treated as a light-engine operation where control and stopping distance are the main concerns. The rule sets a practical ceiling of thirty miles per hour to ensure you can react to signals, occupy switches safely, and stop in a reasonable distance if something unexpected appears on the track. Without a train behind it, the locomotive’s braking and stability require a conservative limit, so forty-five miles per hour would be unsafe, while fifteen or twenty-five miles per hour would either hamper efficiency or still not match the standard safety margin in typical yard and road movements. Thirty miles per hour strikes the right balance, keeping operations efficient while maintaining adequate safety margins.

Moving a single locomotive without cars attached is treated as a light-engine operation where control and stopping distance are the main concerns. The rule sets a practical ceiling of thirty miles per hour to ensure you can react to signals, occupy switches safely, and stop in a reasonable distance if something unexpected appears on the track. Without a train behind it, the locomotive’s braking and stability require a conservative limit, so forty-five miles per hour would be unsafe, while fifteen or twenty-five miles per hour would either hamper efficiency or still not match the standard safety margin in typical yard and road movements. Thirty miles per hour strikes the right balance, keeping operations efficient while maintaining adequate safety margins.