Minnesota Department of Transportation

511 Travel Info

Maintaining Minnesota's Highways


Road and Weather Information System

R/WIS is an automated information system that collects, processes and distributes current and forecasted weather and road surface information. Advanced traveler information systems can provide drivers and fleet operators with R/WIS data including up-to-the-minute warnings about changing conditions. This system will allow highway operations managers to use R/WIS for timely and cost-effective snow plowing and deicing.

In addition to making winter operations more efficient, R/WIS data is used throughout the year in support of MnDOT's 511 traveler information system, herbicide applications, pavement marking, incident management, and timing of road maintenance and construction activities. 

R/WIS data consists of information from 3 core areas:

  • Near real-time surface and atmospheric information provided by 93 remote collection sites
  • Detailed weather and surface forecast information
  • Radar displays and weather information provided from a wide variety of Government, Commercial and University sources

Together this information provides the accuracy and detail needed to efficiently operate and maintain the state transportation system.

Although this system is designed primarily for internal use, access to weather and road condition information is available to the public by dialing 511 or logging into 511mn.org

MnDOT is also involved in several other efforts closely related to R/WIS. Information on these groups and activities can be found at aurora-program.org.