What does this signal at pedestrian crossings indicate?

• The time pedestrians have left to cross the road safely.
  Explanation:

  "The "Countdown" signal indicates the time that vehicles must stop at pedestrian crossings to safely allow pedestrians to cross the road. It starts at the beginning of the DON’T START (flashing hand phase) and ends with a zero and a DON’T WALK (solid hand) phase. Once the countdown starts and the hand is flashing, it is no longer safe to enter the crosswalk."
• The time remaining for vehicles to stop at the crossing.
• The speed limit for vehicles approaching the crossing.
• The number of vehicles allowed to pass before pedestrians can cross.