class FlasherCoordinator
{
   private boolean flashing = false;

   public synchronized void turnOff()	// Turn off flashing of ped light
   { flashing = false; }
   
   public synchronized void turnOn()	// Turn on flashing of ped light
   { flashing = true; }

   public boolean isFlashing()		// is ped light flashing?
   { return flashing; }
}