How should Speed Restriction limits be designated?

Speed restriction limits should be designated in sequential order. This approach allows for a clear and logical understanding of the limits that are in place, facilitating better communication among dispatchers, engineers, and other rail personnel. Sequential designations ensure that all parties have a standardized reference for the speed restrictions, making it easier to manage travel through areas with varying speed limits.

Organizing speed restrictions in a sequential manner corresponds to the layout of the tracks and the locations of the restrictions themselves, which typically follow the flow of rail operations. This structured approach minimizes confusion and enhances overall safety by ensuring that train crews can quickly reference and adhere to speed limitations as they traverse different segments of the track. Also, it promotes consistency across the network, enhancing operational efficiency and safety.

The other options lack the organizational clarity and uniformity that come from a sequential arrangement. Random orders can lead to confusion and miscommunication, while designating by train numbers or geographic regions may not comprehensively address the various speed restrictions that a train may encounter on its route.