What does a yellow traffic light indicate?

A yellow traffic light serves as a warning to drivers that the light is about to turn red. This means that you should prepare to stop unless you are already in the intersection. The intent of the yellow light is to give drivers a brief window of time to react. If you're approaching the intersection and the light turns yellow, it’s important to assess your speed and distance from the intersection to decide whether stopping is safe.

The yellow light might prompt you to slow down if you are far enough away, but it also recognizes that if you are already committed to the intersection, you should proceed rather than risk stopping abruptly, which could create a hazardous situation for you and other drivers. This balance of action ensures safety on the road by encouraging drivers to make informed decisions based on their circumstances when facing a yellow light.