Pedestrian signals that show Walk for two seconds, then show flashing Don't Walk and then solid Don't Walk for the remainder of the green light time. Why even bother installing a pedestrian signal if it's going to be programmed to show Don't Walk all the time?
That's not "all the time", that's technically "all the time" minus two seconds, although people often start across during the countown based on their own ability to know how fast they can walk. The question is whether it does this only when the light is constantly cycling. In the middle of the night, is it normally green on the main drag, and red on the cross street until someone comes along? In that case, during the idle period are all directions showing Don't Walk indefinitely?
I recall that in Portland OR I used to see a lot of traffic lights that, late at night, stayed green with a Walk signal on the main road, until someone came along on the side street. The strange thing was, every minute or so the Walk signal would go into its Don't Walk countdown, and when it got to zero, go right back to Walk.