In signaled territory, what must a Dispatcher ensure before allowing foul time?

In signaled territory, a Dispatcher must ensure that the track is clear of trains and equipment before allowing foul time. This is critical for the safety of both personnel and equipment working on or near the tracks. Foul time refers to a period when train movement is prohibited in a certain area to allow for work to be done safely. If the track is not clear, there could be a risk of accidents or collisions.

Having a clear track means that no trains are approaching or occupying that segment, which allows for safe operations. Other conditions, like all signals being green, provide necessary information for trains but do not directly guarantee safety for work crews on the track. Additionally, the status of foul time requests and the presence of only the lead train do not ensure that the area is safe for workers if there are any other trains or equipment in the vicinity. Therefore, ensuring the track is clear is the most essential factor before permitting foul time in signaled territory.