How can you tell if a traffic signal is malfunctioning?

A traffic signal can be deemed malfunctioning primarily when all the lights are out or flashing erratically. This situation poses a significant safety risk as it can confuse drivers about right-of-way and traffic flow, potentially leading to accidents. In a well-functioning traffic system, each light is designed to convey a specific message regarding traffic movement (stop, caution, or go). When they fail to operate correctly, such as by exhibiting no illumination or an unpredictable flashing pattern, the signal fails to perform its essential regulatory function. Therefore, recognizing this malfunction is critical for the safety of all road users.

In contrast, a blinking yellow light indicates that drivers should proceed with caution but are not required to stop, which does not necessarily mean the signal is malfunctioning. A signal that remains green for an extended period might suggest a malfunction but could also be due to timing settings in the traffic system. A pedestrian light being on is an expected function and indicates that it is safe for pedestrians to cross, not an indication of a malfunctioning traffic signal.