Under what condition can speed restrictions be issued without dispatcher approval?

Speed restrictions can be issued without dispatcher approval specifically when they are outlined in Rule 5.4.7 or Rule 15.2. These rules establish specific circumstances under which speed restrictions are standardized, allowing crews to implement them based on established guidelines rather than requiring prior authorization from the dispatcher.

This streamlined process is critical in maintaining safety and operational efficiency since it allows for quicker response to conditions that may necessitate speed adjustments, avoiding delays that can arise from waiting for dispatcher input.

In contrast, conditions like emergencies, train approaches to stations, or crew agreements do not provide the same level of procedural backing specified in the rules, which could lead to inconsistencies or delays in enforcing important speed restrictions. The emphasis on adherence to defined rules enhances overall safety and compliance within the BNSF framework.