What is true about signaled intersections?

• They give the right-of-way to all drivers and pedestrians at once.
  Explanation:

  "Signaled intersections give the right-of-way to drivers and pedestrians one street at a time."
• They give the right-of-way to drivers and pedestrians one street at a time.
• They do not control traffic flow.
• They only apply to vehicles, not pedestrians.