Which intersection is considered controlled?

1. 1An intersection where the order of passage is regulated only by road signs.
2. 2An intersection where the order of passage is regulated only by traffic-light signals.
3. 3An intersection where the order of passage is regulated only by a traffic controller’s signals.
4. 4An intersection where the order of passage is regulated by road signs, traffic-light signals, or a traffic controller’s signals.
5. 5An intersection where the order of passage is regulated by the signals of a traffic light or a traffic controller.