This is true, but it goes so far beyond that. Lack of mixed use zoning is also a big factor, as are little details like speed limits, road widths, pedestrian is

This is true, but it goes so far beyond that. Lack of mixed use zoning is also a big factor, as are little details like speed limits, road widths, pedestrian islands, cut throughs, plazas, walk/bike paths, size and placement of crosswalks, placement of traffic signals, etc. Something as small as the curve of the corner of the sidewalk at the intersection, most people will never think about, but it absolutely impacts walkability (the larger and less 'sharp' the curve, the less walkable it is).