What happens when the train traverses a failed track circuit in release mode?

When a train traverses a failed track circuit while in release mode, there is no emergency brake application triggered. This scenario occurs because the system is designed to allow the train to continue moving despite a failure in the track circuit, assuming that the train has already received a clear signal to proceed and the failure does not indicate any immediate hazard.

In release mode, the system is set to maintain movement conditions despite certain failures, limiting automatic safety responses that could lead to unnecessary stops or dangerous situations, such as being unexpectedly halted on the track. This allows the train to respond better to real operating conditions unless the failure would lead directly to a risk that is detected by other safety mechanisms.

Other options suggest actions that do not align with how the system operates in release mode. For example, triggering an emergency brake application or reducing the train speed to zero would potentially create more complications and hazards, especially in scenarios where the context is safe to proceed.