pedestrians do cross the street when it's red for them
You have to think what pedestrian lights are for. They exist solely to improve the flow of car traffic. Pedestrian lights are in gross contrast to the rights and benefits of pedestrians. Without lights, pedestrians would always have first priority on a crosswalk. Cars would have to stop for any pedestrian crossing the street. However, drivers (of inefficient but fast automobiles) don't like waiting for a more efficient form (on the city centre scale) of traffic (i.e. pedestrians) to cross the street so pedestrian lights exist to ensure enough green time for cars so that they don't always have to stop. Thus, it is no wonder that any sensible person wouldn't cross the street on red if there are no cars coming.
You have to think what pedestrian lights are for. They exist solely to improve the flow of car traffic. Pedestrian lights are in gross contrast to the rights and benefits of pedestrians. Without lights, pedestrians would always have first priority on a crosswalk. Cars would have to stop for any pedestrian crossing the street. However, drivers (of inefficient but fast automobiles) don't like waiting for a more efficient form (on the city centre scale) of traffic (i.e. pedestrians) to cross the street so pedestrian lights exist to ensure enough green time for cars so that they don't always have to stop. Thus, it is no wonder that any sensible person wouldn't cross the street on red if there are no cars coming.