What does a yellow traffic signal light indicate?

A yellow traffic signal light indicates that the signal is about to turn red, and drivers should prepare to stop. This is a crucial warning for motorists, as it gives them a brief period to react. The intention behind this signal is to enhance safety by alerting drivers that they need to slow down and stop if it is safe to do so, rather than trying to rush through an intersection when the light changes.

This understanding is important for safe driving behavior. Anticipating the change helps reduce the risk of accidents that can occur when a driver attempts to run a red light. Knowing that the transition from yellow to red is imminent encourages responsible actions, such as checking mirrors for following traffic and making a decision to stop or proceed with caution if already in the intersection.

In contrast, the other options do not align with the intended message of a yellow light. Suggesting that drivers speed up misunderstands the purpose of warning about an impending stop. Treating the signal as malfunctioning or remaining yellow for an extended period are not correct interpretations of the yellow light's function in traffic management.