How must trains approach home signals and controlled point signals under DCS rules?

Trains must approach home signals and controlled point signals under DCS (Direct Control System) rules prepared to stop unless a distant signal is in service. This is critical for ensuring safety and maintaining proper control in potentially complex operating conditions. By approaching these signals in a manner that prepares the crew to stop, it allows for a quick reaction should the signal indicate a stop or if the situation on the track requires immediate attention.

The presence of a distant signal can provide important information to the train crew, indicating that the home signal or controlled point signal is likely to be clear, allowing for a more confident approach. However, in the absence of such a signal, maintaining a prepared-to-stop attitude is essential to prevent any potential accidents or oversights.

Understanding the implications of this approach reinforces a key principle of train operation under DCS rules, which prioritize safety and caution in train movements, especially when signals may change unexpectedly or when the rail environment is unpredictable.