During snowplow operations, how many authorities may be used by maintenance and train crew members?

In the context of snowplow operations, having one common authority ensures that there is a clear and unified directive for both maintenance and train crew members. This is crucial for safety and efficient operations in challenging conditions such as snow. A single authority helps coordinate actions, minimizes the risk of miscommunication, and aligns the operational strategies of all personnel involved.

Using one common authority allows for streamlined communication and decision-making, which is vital when addressing the complexities and hazards presented by snow and reduced visibility. Each crew member or unit can operate under the same set of guidelines, thus enhancing safety and operational efficiency during these critical conditions.