What is the purpose of a yellow traffic light?

The purpose of a yellow traffic light is to signal to drivers that the light is about to turn red. This warning is crucial for maintaining safety on the road, as it alerts drivers to prepare to stop if it's safe to do so. The yellow light serves as a transitional phase, giving drivers the opportunity to assess their surroundings and make informed decisions, such as slowing down or stopping, rather than suddenly accelerating or speeding through the intersection. Understanding this aspect of traffic signals is essential for responsible driving and ensuring the safety of all road users.

Other options do not accurately capture the function of a yellow traffic light. For example, while caution is recommended while the light is yellow, the primary purpose is to warn that the signal will soon change to red, necessitating immediate attention from drivers to prevent potential accidents at intersections.