What does a yellow traffic light indicate?

A yellow traffic light serves as a warning to drivers that the signal is about to change to red. The purpose of this light is to communicate to motorists that they should prepare to stop if it is safe to do so. When approaching a yellow light, drivers need to assess their speed and distance from the intersection to make a safe decision about whether to stop or continue through the intersection.

The yellow light's primary function is to alert drivers to the imminent change. It is not an invitation to speed up or make sudden movements, as the safe action is typically to decelerate and stop if possible. Maintaining awareness of traffic signals is essential for road safety and smooth traffic flow.