What should you regard an interlocking signal displaying too many lights as?

When an interlocking signal displays too many lights, it indicates a malfunction or failure in the signaling system, which traditionally leads to the presumption of a stop signal. This behavior serves as a precaution for safety, as a signal displaying an excessive number of lights does not conform to the expected signal indications.

The key principle here is that a signal must provide clear and unambiguous information to the train operators regarding the state of the track ahead. A signal showing too many lights violates this clarity and therefore cannot be trusted for proceeding safely. Train operators are instructed to treat such signals as stop signals, which ensures that trains come to a halt to prevent potential collisions or accidents that could arise from misinterpreting the signal's intended meaning.

By adopting a conservative approach in the face of unclear signaling, rail safety is prioritized and potential hazards can be effectively mitigated. This cautious stance is a fundamental aspect of safe train operation and reflects the established protocols outlined in the LIRR Operating Rule Book.