What should you understand if you see flashing lights approaching during your decision altitude?

When flashing lights are observed during your decision altitude, it typically indicates that you are approaching the runway, and those lights are most likely flashing approach lights. In aviation, flashing approach lights are designed to provide visual cues to pilots during an approach, indicating that the runway is nearby and that it is safe to continue the landing process if conditions allow.

The presence of flashing lights signifies that you are aligned with the runway and, under normal circumstances, you can proceed with the approach as planned. This is often an important point in the approach and landing phase, where situations would dictate either continuing to land or executing a go-around based on aircraft control, runway conditions, and other environmental factors.

In contrast, the other choices highlight scenarios that do not apply in this situation. For example, while warning lights and indications of a potential collision are critical in various circumstances, they are not indicative of the typical flashing approach lights at a decision altitude. Understanding the function of these lights helps ensure safe and effective navigation during critical phases of flight.