What should be done if a signal is imperfectly displayed?

When faced with an imperfectly displayed signal, it is crucial to treat it as the most restrictive indication. This response ensures safety by requiring the operator to respond with the highest level of caution, as the signal's intended message is unclear. By regarding the signal as the most restrictive, the operator is compelled to take appropriate actions, which typically involve slowing down, preparing to stop, or following established protocols for ambiguous signals.

This approach prevents misinterpretation of the signal, thus minimizing the risk of accidents or unsafe operating conditions. In the realm of train operations, prioritizing safety over speed or convenience in potentially ambiguous situations is paramount.

While contacting the rail control center could be a necessary step in some situations, the standard immediate response to an imperfect signal is to treat it as the most restrictive signal to ensure that operations remain safe. Ignoring the signal or proceeding with caution without acknowledging its ambiguous nature could lead to serious safety breaches.