What must train orders be written without?

Train orders must be written without erasure, alteration, or inter-lineation to maintain clarity and ensure safety in railroad operations. This standard is essential because any changes made to the original text could lead to misinterpretation or confusion about the instructions given. When train orders are altered in any way, it raises the risk of misunderstanding crucial directives, which could jeopardize the safety of operations and the personnel involved.

Maintaining the integrity of the train orders is critical, as they serve as official documents that dictate how trains should operate under specific conditions. This requirement emphasizes the importance of clear and unambiguous communication within the railway system. By prohibiting changes like erasures or alterations, the rules help to prevent potential accidents that could occur from unclear or modified instructions.