The correct answer to this open question is the following.
Traffic facing a green arrow signal, shown alone or in combination with another indication, may cautiously enter the intersection only in the direction of the arrow.
We are referring to important signals and lights in traffic, and the importance of following and respecting traffic signals. Being aware of them and driving safely can prevent accidents. There are many general recommendations such as the one on this question, to proceed cautiously in the correct direction when entering an intersection. It is important to be aware of signals before entering a highway, or during construction to sign "Men at Work," or during traffic accidents.
