The Minnesota Department of Transportation (Mn/DOT) conducted a two-year study on developing a concept of the Next Generation Road/Weather Information System (NG-R/WIS). This report describes the concept and a prototype implementation of the NG-R/WIS in Minnesota District-1. Traditional R/WISs offer limited scope of data types, limited communication methods, and proprietary incompatibility problems. The R/WIS in Minnesota District-1 experienced the typical problems of the traditional R/WIS. This project looked a solution to those problems-developing a new layered hierarchical architecture referred to as NG-R/WI. Four layers--a sensor layer, a data integration, a database layer, and an application layer--form the basis of the NG-R/WIS form the basis of the NG/RWIS. This architecture allowed integration of heterogeneous systems through the data integration layer and provided structured data to applications through a standard relational database and computer networks. This project developed three applications: web page service, automated voice service, and live stream-video service. The web pages and automated voice services provided solutions for unlimited access from anywhere, unified data format, ease of use, and no requirements of special terminals or software. The live video stream demonstrated integration capability of the system and provided a new class of information. The report concludes with the recommendations and future directions of the proposed NG-RWIS.