Figure 2 Overview of the GIS sidewalk measures for a 1 km radius circular buffer testing site. The top left panel shows the 1 km circular
buffer testing site, and all of the road segments are highlighted with the green lines. The top right panel shows the same 1 km circular buffer
testing as in the top left panel; however, only the road segments that have a sidewalk are highlighted with the green lines. The bottom left and
bottom right panels of the figure show a blow-up of a section of the 1 km circular buffer testing site. All road segments (bottom left panel) and
those road segments with sidewalks (bottom right panel) are highlighted with the green lines.