What ensures that train speeds comply with cab signals?

The automatic train control system is designed to monitor and manage train speeds in real-time, ensuring that the speeds comply with the indications provided by cab signals. This system acts independently and continuously calculates whether the train is traveling at a safe speed according to the received signals. If the automatic train control system detects that the train is exceeding the permissible speed based on the cab signal indications, it will intervene by automatically applying the brakes to slow down or stop the train if necessary.

This technology enhances safety by reducing the reliance on human response times and minimizing the possibility of human error, which can lead to speeding incidents. In contrast to other options, the automatic train control system is specifically engineered for this function, making it a critical component in maintaining operational safety and adhering to speed regulations within the railway system.