What characterizes a Non-Controlled Track?

The characterization of a Non-Controlled Track is that trains can move without any authorization. In such tracks, there are typically fewer operational restrictions, allowing trains to proceed freely without the need for explicit permission from a dispatcher. This kind of arrangement is often found on tracks that are not closely monitored or controlled, potentially increasing the flexibility for train movements.

In contrast, on a Controlled Track, trains require authorization and permission from train dispatchers to ensure safe operation and prevent collisions. The other options describe scenarios that do not accurately reflect the operational nature of a Non-Controlled Track, where trains are not restricted to a single direction or required to halt at all times. Therefore, the defining feature of a Non-Controlled Track is indeed the absence of such authorization requirements, allowing for more autonomous train movements.