What does a flashing yellow light mean?

A flashing yellow light indicates that drivers should proceed with caution. It serves as a warning to pay attention to the surrounding environment, as there may be potential hazards ahead, such as pedestrians, road work, or a less visible intersection. It alerts drivers to reduce their speed and be prepared for any sudden changes in driving conditions. Unlike a solid yellow light, which signals that the light is about to change to red, a flashing yellow gives drivers the proactive advisory that they can continue moving but should do so with careful attention to safety.

The other options present actions that do not apply to a flashing yellow light. For instance, stopping and yielding implies a more urgent requirement for traffic control that is not inherent to a flashing yellow signal. Preparing to stop is more aligned with a yellow light transitioning to red, while speeding up is contrary to the cautionary nature of the signal.