What does the yellow traffic light mean?

Answer: A — The signal is about to change to red; prepare to stop

The yellow traffic light indicates that the signal is about to change to red, which serves as a warning for drivers. It is a signal to prepare to stop, as continuing through an intersection when the light changes could lead to a traffic violation or contribute to an accident. The intention of the yellow light is to provide time for vehicles already in motion to slow down and stop safely rather than forcing them to make hasty decisions that could lead to danger. In some situations, it may be permissible to proceed through the intersection if you are unable to stop safely; however, the primary directive of the yellow light is to alert drivers that they should anticipate the transition to a red light. Therefore, being prepared to stop is the most appropriate action when encountering a yellow traffic light.