BNSF Dispatcher Trainee Practice Exam

The appropriate response to a broken or malfunctioning signal is to apply track block(s) or restrictive tag(s). This action is essential for maintaining safety in rail operations. A malfunctioning signal can create uncertainty about the status of the track ahead, potentially leading to a collision or derailment.

By applying track blocks or restrictive tags, the dispatcher ensures that any train approaching the malfunctioning signal is prevented from proceeding at normal speed. Instead, they will have to slow down or stop, allowing the dispatcher to manage the situation effectively. This mitigates the risk to both trains and personnel by enforcing a system of caution while the signal issue is being addressed.

The other responses do not prioritize safety and could lead to dangerous situations. Doing nothing would leave trains in uncertain conditions, allowing them to proceed without necessary precautions. Allowing trains to maintain normal speeds could result in accidents, and merely informing senior dispatchers does not provide immediate safety measures for ongoing train operation. Taking proactive measures like applying track blocks or restrictive tags is crucial for ensuring the safe movement of trains in the vicinity of the malfunctioning signal until repairs can be made.