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About the Data

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Vehicle traffic impacts public health in many ways. Traffic can limit opportunities for walking and physical activity, and can be a safety hazard. Traffic contributes to local air pollution and noise levels, especially near major roadways.

For more information, see MN Public Health Data Access: Traffic Exposure

Data Sources
  • Roadway and traffic data are from the MN Department of Transportation Traffic Forecasting & Analysis traffic volume data (1997-2017).
  • Population and poverty data are from Census Bureau American Community Survey 2013-2017 5-year tract-level estimates, via American Fact Finder. Data are calculated for 2010 census tract geography.
Data Notes
  • This map displays census tract estimates of the number and percent of Minnesota residents living within 300 meters of busy roads, where air pollution from motor vehicle traffic is highest. Busy roads are defined as any road segment with annualized average daily traffic (AADT) greater than 10,000 vehicles.
  • Census tracts are small, relatively permanent geographies that are smaller than counties, larger than census block groups, and roughly equivalent to a neighborhood. They are determined by the U.S. Census Bureau and are updated prior to each decennial census (last updated for 2010 census). Census tracts generally have a population between 1,200 and 8,000 people, with an optimal size of 4,000 people.
  • County name in hover-over window is primary county of that census tract, as assigned by the U.S. Census Bureau. Some census tracts may extend into another Minnesota county.
  • To learn more about how these measures were calculated see About traffic data.
For questions or more information regarding the mapping application, please contact the Minnesota Public Health Data Access or via e-mail at: health.dataportal@state.mn.us

Table: Traffic (2017)

County Tract 2010 ID County percent near busy roads Percent near busy roads Percent in poverty Poverty level

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