Distribution of (a) 218 residence-to-road distances for road links with AADT >40,000, grouped by initial classification of the home as high diesel (HD), low diesel (LD), and low traffic (LT) (home classifications are preliminary and based on initial geographically coded estimates from ArcGIS), and (b) 107 school-to-road distances for road links with AADTs >40,000 or >10,000 and all roads.