Take the Las Vegas Strip for example. They have a lot of pedestrian bridges for people to avoid crossing streets. Granted, this also works to funnel folks into

Take the Las Vegas Strip for example. They have a lot of pedestrian bridges for people to avoid crossing streets. Granted, this also works to funnel folks into casinos. However, it would be difficult for a pedestrian to get into the street at some intersections because of fences and barricades. I have to think that most cities will evolve similarly when self-driving cars become commonplace