To cross the street as a pedestrian when there is no traffic light signal. . .
You take an orange flag and hold it up as you walk across the street. All cars must stop until you have completely crossed. There were only two flags left on this post so a lot of people had already crossed the street. I don't know what you do if there are no flags left -- probably walk a few blocks to the traffic light. That's what I did because I was afraid to use a flag to cross the street.