What is true about the CBTC 'Proceed' signal aspects in Release mode?

In the context of Communication-Based Train Control (CBTC) systems, the 'Proceed' signal aspects play a crucial role in maintaining the safe and efficient operation of train services. The specific behavior of these signals in Release mode is essential for engineers to understand.

In Release mode, the train is typically in a state of responding to specific command signals generated by the CBTC system. During this mode, the 'Proceed' signal aspects are not transmitted or displayed to the train. This means that while operating in CBTC Release mode, engineers will not receive 'Proceed' signals, which indicates that the system does not permit straightforward movement or acceleration without proper command signals. This helps maintain safety protocols and ensures that train operation aligns with the system's capacity to monitor and control train movements effectively.

Understanding that 'Proceed' signals are not received in Release mode is critical, as it underlines the importance of following the operational protocols when navigating through varying control states within the CBTC framework. In practice, this emphasizes the need for engineers to rely on alternative indicators or signals that may be present during this mode, rather than expecting to see a 'Proceed' aspect, which would typically imply allowed movement.