What action should be taken when approaching a yellow traffic light?

When approaching a yellow traffic light, the appropriate action is to start preparing to stop. A yellow light serves as a warning that the signal is about to change to red. This is your indication to slow down and prepare to bring your vehicle to a stop safely if you are able to do so. The purpose of the yellow light is to give you time to react and ensure that you can either stop safely or, if you're too close to the intersection to stop, continue through with caution.

Choosing to speed up in an attempt to cross before it turns red can be dangerous and is not a recommended practice, as it can lead to running a red light or losing control of the vehicle. Honking the horn or ignoring the yellow light are also not safe responses, as they do not address the need for caution and do not contribute to safe driving practices.