What does a flashing yellow traffic light mean?

A flashing yellow traffic light indicates that drivers should proceed with caution. This signal serves as a warning to be alert and mindful of potential hazards in the area, such as pedestrians, other vehicles, or changes in the road conditions. It does not require drivers to stop, but rather encourages them to slow down and prepare to yield if necessary.

Understanding this signal is crucial for maintaining safety on the roads. It allows traffic to flow with some flexibility while still emphasizing the need for drivers to remain vigilant. The other choices may lead to unsafe driving behaviors. Coming to a complete stop is unnecessary and could cause confusion or impede traffic flow. Speeding up would be dangerous and contradicts the intent of the caution sign. Turning left at an intersection would depend on other signals and road markings rather than solely a flashing yellow light.