Photo by Jake Blucker on Unsplash

The only time of year that I’m actually happy about traffic is when we get updated traffic data for our reports. Below are 52 of my favorite sources of traffic data that you can use to visualize the AADT or annual average daily traffic that drives past your business (yay!) or past your home (boo!). Let’s start with a table of traffic count data sources from state departments of transportation — DOTs for short.

State DOT Traffic Counts Resources

State DOT Name & Link Most Current AADT/ADT Year in Interactive Map Notes
Alabama DOT Traffic 2017 AADT Appear to have some 2019 data as Reports. Can download 2017 shapefiles
Alaska DOT Traffic 2017 AADT
Arizona DOT Traffic 2019 (some) AADT
Arkansas DOT Traffic 2018 ADT Static maps by county here
California DOT Traffic 2017 AADT Tabulated data, not mapped
Colorado DOT Traffic 2018 AADT Other source here
Connecticut Open Data 2014 ADT Static maps here
Washington DC DOT Traffic 2016 AADT
Delaware DOT Traffic 2018 AADT Data in KMZ file
Florida DOT Traffic 2018 AADT Can download shapefile here
Georgia DOT Traffic 2018 AADT Other source here
Hawaii DOT Traffic 2017 AADT
Idaho DOT Traffic 2017 AADT
Illinois DOT Traffic 2018 AADT Static traffic map here
Indiana DOT Traffic 2018 AADT Can download shapefiles here
Iowa DOT Traffic 2018 AADT Static maps here
Kansas DOT Traffic 2018 AADT Other map here
Kentucky DOT Traffic 2018 (some) AADT
Louisana DOT Traffic 2018 AADT
Maine in ArcGIS 2017 AADT There’s no DOT official map. Report with a list of intersections & traffic counts here
Maryland DOT Traffic 2017 AADT Can download KML here
Massachusetts DOT Traffic 2018 AADT
Michigan DOT Traffic 2017 AADT
Minnesota DOT Traffic 2018 AADT Static maps & shapefile here
Mississippi DOT Traffic 2018 ADT
Missouri DOT Traffic 2017 AADT
Montana DOT Traffic 2018 AADT
Nebraska DOT Traffic 2018 AADT Other resource here
Nevada DOT Traffic 2018 AADT Static maps here
New Hampshire DOT Traffic 2018 AADT
New Jersey DOT Traffic 2017 AADT
New Mexico MPO Traffic 2017 ADT
New York DOT Traffic 2016 ADT Can download shapefile here
North Carolina DOT Traffic 2017 AADT Static map here
North Dakota DOT Traffic 2019 (some) AADT
Ohio DOT Traffic 2019 (some) AADT
Oklahoma DOT Traffic 2018 AADT Can download shapefile here
Oregon DOT Traffic 2017 AADT
Pennsylvania DOT Traffic 2017 AADT Static maps here
Rhode Island DOT Traffic 2016 AADT
South Carolina DOT Traffic 2018 AADT
South Dakota DOT Traffic 2018 ADT
Tennessee DOT Traffic 2017 AADT
Texas DOT Traffic 2017 AADT
Utah DOT Traffic 2016 AADT Data in KMZ file
Vermont DOT Traffic 2018 AADT
Virginia DOT Traffic 2018 ADT
Washington DOT Traffic 2018 AADT
West Virginia DOT Traffic 2018 AADT Other map here
Wisconsin DOT Traffic 2018 (some) AADT Static maps here
Wyoming DOT Traffic 2016 AADT

The DOT datasets above hit the data sleuthing jackpot in that they are free traffic count data sources as well as trustworthy and fairly current. If you have to have 2019 data, skip to the What traffic count data do we use in Cubit’s reports & maps? section below. It can be a bit of pain to incorporate DOT traffic data into your business documents, but it’s nothing that you can’t solve with a good GIS (mapping software) or worst-case scenario, a screen capture tool. 

Need traffic counts for the entire US?

DOT traffic count data are by definition just for 1 state, but some projects require multi-state traffic counts. If you are already comfortable using a GIS or software with mapping capabilities, the Federal Highway Administration (FHWA) provides Highway Performance Monitoring System shapefiles for large roadways like interstates and freeways. The last time I checked on this data, the shapefiles contained 2017 AADT. I really like this FHWA data source, but what I hear from my clients is that there’s a huge learning curve to working with shapefiles. So if you aren’t already familiar with shapefiles, consider sticking with the state DOT resources in the table above or paying us at Cubit to build you a custom map with traffic data.

Don’t have time to learn about AADT, GIS, shapefiles, etc.?

I hear you! Sure, you could pull traffic data yourself. Or for $99, you can get a radius report with traffic data. In fact, our clients order more traffic data reports than any other radius report customization – it’s that popular! Since 2009, these same clients outsource these data pulling tasks and research to us at Cubit so they can focus on building their businesses. 

What traffic count data do we use in Cubit’s reports & maps?

Unlike most of our demographic data that comes directly from government data sources, we use current (2019) traffic estimates from Kalibrate, a private data vendor, first because:

  1. Kalibrate sources their data from public & private data sources. This means that for certain areas, they have more traffic counts than public data sources alone.
  2. Kalibrate’s data are consistent across states. If you need a radius report in New York City where you want to see traffic counts for both New York and New Jersey, your traffic data will be consistent rather than using 2016 New York data versus 2017 New Jersey data.

Second, if the Kalibrate traffic data doesn’t have enough current traffic counts for a particularly rural area, then we double-check with either the Federal Highway Administration dataset or the state DOT datasets (above). So you get the best of both worlds – current data from a private data source supplemented by government data.

Got questions about traffic counts? Email me, because I’m here to help.