Non-invasive road sensors in Road Weather Information Systems (RWIS) and AVL Systems

This project will implement non-invasive road temperature and road condition sensors on three Road Weather Information Systems (RWIS) located in Minnesota (D1 Mitchell Bridge, Metro - Cayuga Street Bridge, Inver Grove Heights). Current passive road sensors are embedded in the road surface. Whenever there is a construction or maintenance project that impacts the road surface (mill and overlay, seal-coating, patching, etc.), the embedded sensor must be replaced. This, and periodic RWIS site and sensor maintenance, requires lane closures and cutting the road surface to install the sensor and cables. The non-invasive sensors will be attached to the RWIS tower or a pole near the roadway and use laser technology to read the road surface temperature and condition (water, ice, slush, and snow); subsequently, future road projects do not impact the sensor and periodic maintenance does not require lane closures.


    • English


    • Status: Programmed
    • Sponsor Organizations:

      Minnesota Department of Transportation

      395 John Ireland Boulevard
      St Paul, MN  United States  55155
    • Start Date: 20180701
    • Expected Completion Date: 0
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01670188
    • Record Type: Research project
    • Source Agency: Minnesota Department of Transportation
    • Files: RIP, STATEDOT
    • Created Date: May 24 2018 11:02AM