The following information is provided as a reference by the Wyoming Department of Transportation. Traffic volumes included are estimates.

Traffic Volume and Vehicle Miles Book

Annual Average Daily Traffic estimates (AADTs) are derived from three primary sources of data: permanent traffic recorders, portable traffic recorders and Manual traffic classification counts. AADTs are multiplied by road length to calculate Vehicle Miles Traveled.

2020 Vehicle Miles Book - Excel format or PDF format

The Interactive Transportation System Map is a new online offering from WYDOT that provides traffic count data and other information about the state road system. The map uses GIS technology to allow users to choose from one or more data layers, the last being Traffic Counts (2015).





Annual Automatic Traffic Recorder Report Map


The Automatic Traffic Recorder Report Book is a summary of data collected annually at various permanent traffic monitoring sites (ATR's) in Wyoming. Click the map above to see traffic monitoring sites. The links below provides access to various statistics for each ATR traffic site. Those statistics include volume by hour, day and month, and percent of change from last year. Traffic volumes are estimated.

Wyoming Automatic Traffic Recorder Report Book

2016  2015   2014   2013   2012    2011    2010    2009