What does this traffic light mean?

• Drivers can only proceed straight at the intersection
• Drivers must come to a complete stop
• Drivers are permitted to go through, turn left or turn right without stopping.
  Explanation:

  "Drivers facing a flashing green traffic control light are permitted to go through, turn left or turn right without stopping. Opposing traffic will be facing a red light; however a driver must still yield to pedestrians or other vehicles lawfully in the intersection."
• Driver must prepare to stop or clear the intersection if already in it