What action is required when a traffic signal turns yellow?

When a traffic signal turns yellow, the appropriate action is to prepare to stop unless you are already within the intersection. The yellow light indicates that the signal is about to change to red. This is a warning for drivers to make a decision about whether it's safe to stop or if they are too close to the intersection to do so comfortably.

If you are already in the intersection when the light turns yellow, it is often safest to continue moving through to avoid stopping suddenly and potentially causing an accident. However, if you are approaching the intersection and the light changes to yellow, you should begin to slow down and prepare to stop safely. This understanding of how to react to a yellow light emphasizes the importance of anticipating changes in traffic signals and making safe decisions.