This application displays Annual Average Daily Traffic (AADT) volumes maintained by the Washington State Department of Transportation (WSDOT) for the State Highway System. It replaces the Traffic Flow Map historically provided in the department’s Annual Traffic Report (ATR). It also augments the ATR by providing AADTs for more traffic counting locations than found in that report.
A tutorial on using the application is available in the application's Help (pdf 1.4 mb).
Some features of the map may appear blurry for Internet Explorer 6 users. This issue can be addressed by upgrading to a newer version of Internet Explorer or by using Firefox 3.5+, Google Chrome 2.0+ or Safari 4+ browsers (all of which have been tested for compatibility with this application).