说明

The light at the intersection of Columbia Pike and the exit from Washington Blvd SB, which already has a long wait time for traffic coming from the exit, sometimes skips green cycles — this can be seen when the pedestrian signal will count down to red and then turn green again.

If the light is triggered by the presence of a car, then it seems that it skips cycles when a motorcycle is present at the intersection.

Additionally, if the light is triggered by cars, then why the long wait cycle? It seems that one or the other would be sufficient, not a combination of both.