What is one method for a reverse move with a Form D line 2 authorized?

In the context of railroad operations and safety protocols, when performing a reverse move with a Form D line 2 authorization, it is essential to have proper oversight to ensure safety during the maneuver. Having a crew member accompany the train while it is moving in reverse is a critical method that promotes this safety. This crew member acts as an extra set of eyes to monitor any potential hazards and communicate with the engineer, helping to enhance situational awareness and prevent accidents.

The choice that indicates the need for a crew member aligns with safety best practices in the industry. It emphasizes the importance of vigilance and assistance, especially since reverse movements can present unique risks due to limited visibility and situational awareness for the train crew.

The other options do not align with the fundamental safety protocols for reverse movements. For instance, requiring visible signals or allowing high-speed movements could compromise safety, as reverse movements typically necessitate caution and lower speeds. Moreover, reversing beyond the last signal can lead to unpredictable situations and operational complications, making it an unsafe practice. Thus, having a crew member accompany the train is the most reliable and safe method under these circumstances.