What does a flashing yellow light signal to drivers?

Answer: B — Proceed with caution and be prepared to stop

A flashing yellow light signals to drivers that they should proceed with caution and be prepared to stop. This indicates that while it is safe to continue through the intersection or area, drivers must remain attentive to the road conditions and be ready to yield to pedestrians, other vehicles, or any potential hazards. It serves as a warning for the driver to exercise extra vigilance, particularly in areas where there may be unexpected conditions such as pedestrians crossing or vehicles exiting side streets. Other options suggest actions that do not align with safe driving practices; coming to a complete stop is unnecessary unless directed by other traffic signals or signs. Simply proceeding when the intersection is clear does not account for potential hazards that may arise. Lastly, speeding up to clear the intersection is dangerous and could lead to accidents, contradicting the cautious approach that the flashing yellow light is intended to convey.