Nelson's family crossed the street where they did because it was where the bus stop was. The nearest crosswalk was 20 min out of the way.
In the aftermath of the "accident", traffic engineers inspected the place where Nelson's child died. They decided there were not enough pedestrians to justify installing a crosswalk or a traffic light.
Meanwhile in the greater Atlanta area, a quarter of all pedestrian fatalities occurred within 100 ft of a bus stop, and over half occurred within 300 feet.