What happens to the train's speed when it exceeds the threshold in Release mode?

When the train exceeds the threshold in Release mode, the brakes are automatically applied as a safety measure to prevent further acceleration beyond a designated speed limit. This feature is crucial for maintaining safe operational parameters and ensuring the safety of passengers and crew. The automatic braking system is designed to react quickly to prevent potential accidents caused by overspeed situations.

In Release mode, the train is typically allowed a certain level of speed flexibility, but exceeding the threshold activates this safety mechanism to bring the train back within safe operational limits. This ensures the train can be controlled effectively, especially in circumstances where manual intervention may not occur promptly. The other options do not align with the operational safety protocols typically employed in train systems, which prioritize automatic responses to speed limit breaches.