What does a flashing yellow light indicate for motorcyclists?

Answer: B — Proceed with caution

A flashing yellow light signals to motorcyclists that they should proceed with caution. This indication means that while it is safe to continue through the area or intersection, riders must be alert and prepared to react to any potential hazards, such as pedestrians, other vehicles, or changing road conditions. This cautionary signal is vital for safety because it warns that attention is required, given the possibility of unexpected situations. For instance, vehicles may be approaching from side streets, or pedestrians may be crossing the intersection. In situations where a rider might stop immediately, this would typically be signaled by a solid red light. Speeding up to clear the intersection is not advised with a flashing yellow, as that could lead to accidents if unexpected dangers arise. Similarly, preparing to turn is not specifically indicated by a flashing yellow light, as its primary purpose is to alert to ongoing caution, rather than to suggest an action like turning.