What does the presence of a yellow light suggest?

The presence of a yellow light indicates a transition in the traffic signal, often signaling that the light is about to turn red. In this context, it serves as a warning for drivers to prepare for a change in the traffic control. The appropriate response is to proceed with caution, as the yellow light allows for a brief moment to safely navigate through the intersection before the light turns red.

Additionally, it is prudent for drivers to prepare to stop when seeing a yellow light, particularly if they are close to the intersection and could safely stop before the light turns red. Recognizing that a yellow light serves both as a cautionary signal and an indication that stopping might be necessary is key to safe driving practices. Thus, both aspects of the yellow light's meaning are crucial, making the choice that includes both options a comprehensive understanding of the signal.