Which intersection is considered controlled?

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