How should a train be governed if cab signals and fixed signals do not conform?

In situations where cab signals and fixed signals do not conform, following the more restrictive signal indication is essential for safety and operational integrity. This approach prioritizes caution and ensures that the train operates under the safest conditions possible, complying with both visual and electronic signal guidance.

Adhering to the more restrictive indication allows train crews to mitigate the risks associated with potential miscommunication or signal failure. It ensures that the train travels at a speed and under conditions that account for any uncertainties that may arise from conflicting signals. This practice aligns with the overarching safety philosophy in railway operations, which emphasizes erring on the side of caution.

In contrast, options such as referring to later orders from the Dispatcher or proceeding at normal speed could potentially lead to hazardous situations, as they might not adequately address the immediate inconsistencies between cab and fixed signals. Continuing with no restrictions would disregard the safety protocols necessary to manage the ambiguity that arises when signals do not align, thereby increasing the risk of accidents.