Mn/DOT Statewide R/WIS Archive Download Page

The raw RWIS data is continuously collected by the statewide RWIS server managed by the Mn/DOT's Office of Maintenance (MN Statewide R/WIS) . The server at the Data Center of the Transportation Data Research Laboratory (TDRL) at UMD (University of Minnesota Duluth) downloads this data from the Mn/DOT's export server through network. The server at TDRL then daily archives this data using the Unified Transportation Sensor Data Format (UTSDF) and makes them available to public through Internet. This archived historic data is presently only available through TDRL.

  1. List of available data. It creates a large list of RWIS archived files that you can download.
  2. Data Information. It connects to data format and related information needed to read the *.rwis archived files.
  3. Site Location. Describes Minnesota R/WIS site locations through GPS coordinates and mile points.
  4. UTSDF Intro. Describes the basics of UTSDF. UTSDF Intro pdf file.

 Free Downloadable Utility Programs for "*.rwis" Data

RWIS UTSDF Archive Viewer V1.0 This software tool provides extraction of Daylets (24hr data for each RWIS parameter) from the RWIS UTSDF archive-files. It provides comma separated text extraction of data for all parameters and 24 hour graphs for all numerical paramenters. It also includes a pavement icing/wet analysis tool based on a graphical analysis of air/dew/pavement temperatures and text display of pavement conditions. To install, simply double click on the downloaded file.
Fix Note: Feb 11, 2004 - Installtion Problem on dzncore.dll was fixed.

We are conitinously working on to add more functions to this tool aiming for use in winter road maintenance and research. Our next addition will be advanced map visualization of the present data and development of yearlets for large scale analysis. Please check back this site for future releases.