On my way to the store, I drive along a 4-lane avenue that has a very wide meridian, 20-storey apartment buildings on either side. Midblock there is a driveway exit from one group of buildings, bus stops on both sides of the avenue, and a crosswalk neatly painted from one side to the other side of the street. What makes this crosswalk notable is the very large curbside sign painted with the usual "caution - pedestrians" warning; but with a light bar on top (and a solar battery charger over that). Last week I happened to be driving when there was a man crossing the street. The sign was lit up with a bright pedestrian-shape walking, red lights on top flashing, and "STOP" flashing at the bottom of the sign. Attention-getting! The man reached the other side of the street, the sign turned off its warning lights and "stop" changed to "thank you".
I have never seen anything similar elsewhere.