What does it mean if a traffic light is yellow?

A yellow traffic light serves as a warning that the light is about to change to red. It indicates that drivers should be prepared to stop if they are safely able to do so. This is crucial for maintaining traffic safety, as it allows the intersection to clear before the light turns red to prevent potential accidents.

Understanding the function of a yellow light is important for drivers, as it signals a transition phase. It encourages decision-making: those who are already in the intersection should clear it, while others approaching should slow down and prepare to stop. This helps create a safer driving environment for all road users, including pedestrians and cyclists.