What does radio blocking establish in non-signaled territory?

Radio blocking establishes an absolute block for a following train in non-signaled territory. In this context, radio blocking is used to ensure safety by clearly indicating that a section of track is occupied and cannot be entered by another train until the block is cleared.

This system relies on communication between the crew and the dispatcher, who uses radio communication to provide assurance that a train is safely positioned on the tracks and that no other train can proceed into that block of track. This is particularly important in non-signaled areas where traditional traffic signals are absent, making effective use of communication crucial for maintaining safe train operations.

The other choices do not pertain to the function of radio blocking. For instance, while communicating train schedules is important, it does not specifically address the safety aspect of preventing other trains from entering an occupied block. Similarly, shortcuts for train routes and systems for cargo reports do not directly relate to the purpose of establishing blocks for safety in train operations.