This dataset represents untransformed average annual daily traffic (AADT), or vehicles per day, throughout the Northeastern United States circa 2010.
Detailed documentation for the methods to derive the dataset are available from the Ancillary Data document: http://jamba.provost.ads.umass.edu/web/LCC/AncillaryData.pdf
This dataset was developed as part of the Designing Sustainable Landscapes project led by Professor Kevin McGarigal of the University of Massachusetts and sponsored by the North Atlantic Landscape Conservation Cooperative; for more information about the entire project see: http://www.umass.edu/landeco/research/dsl/dsl.html
Important steps in developing the dataset include:
1) Obtained raw road traffic data from TrafficMetrix (MPSI), primarily 2006 to 2012
2) Obtained roads dataset from Open Streetmap (OSM extract Jan. 2013)
3) Developed a custom algorithm applying regression to predict traffic rate based on raw roads traffic data and intensity of development in areas surrounding the roads.