Which action should you take at a yellow traffic signal when you are already in the intersection?

When you encounter a yellow traffic signal and you are already in the intersection, the appropriate action to take is to continue moving through safely. A yellow signal indicates that the light is about to change to red, and drivers who are already in the intersection should proceed to ensure they clear the intersection safely, rather than making abrupt maneuvers which could endanger themselves or other road users.

Stopping immediately while in the intersection could potentially lead to rear-end collisions, as vehicles behind you may not expect a sudden stop. Turning around is not a viable option as it could cause confusion or accidents with other vehicles. Speeding up to exit is also unsafe, as it increases the risk of losing control or not being able to stop if required.

Thus, maintaining control and safely exiting the intersection is the best course of action when faced with a yellow traffic signal while already in the intersection.