Wyoming Department of Transportation

Traffic Data

The following information is provided as a reference by the Wyoming Department of Transportation and the 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.

Vehicle Miles Book - Excel format or PDF format

Click on the route number ranges in the table below to find your traffic information. To find your route numbers, click on the map below to see route numbers in red.


Sample Format of Vehicle Traffic Information
9 to 36
37 to 300
302 to 9470




Summary of Vehicle Miles by Functional Classification

2013 2011
Weighted Average by Individual Road


Summary of Vehicle Miles on State Highways by County (3 pages)




Annual Automatic Traffic Recorder Report Map

Map of traffic recorder locations


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 

2014   2013   2012    2011    2010    2009

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